| Title | Host | Airdate | Description | Catalog Info | |
|---|---|---|---|---|---|
| Concentration (Original) | Hugh Downs | 1958 | Walter vs. Robert | A-/Kine OC | |
| Concentration (Original) | Hugh Downs | 1959 | Art James guest hosts - beginning missing | B/Kine | |
| Concentration (Original) | Hugh Downs | 1963 | Art vs. Nettie | B/Kine | |
| Concentration (Original) | Hugh Downs | 1963 | Ralph vs. Arthur Day 1 | B/Kine | |
| Concentration (Original) | Hugh Downs | 1963 | Ralph vs. Arthur Day 2 | B/Kine | |
| Concentration (Original) | Hugh Downs | 1967 | Dorothy vs. Clara | B/Kine | |
| Concentration (Original) | Hugh Downs | 1967 | Santa vs. Santa | B/Kine | |
| Concentration (Original) | Bob Clayton | 1969 | Diane vs. Pat | B/Kine | |
| Concentration (Original) | Bob Clayton | 1969 | Christmas | B-/Kine OC | |
| Concentration (Original) | Bob Clayton | 3/23/73 | Final episode in color! | A-/Kine | |
| Concentration (Narz) | Jack Narz | 1974 | 0344 - Sheryl vs. Jane | A/SM | |
| Concentration (Narz) | Jack Narz | 1976 | 0971 - Nancy vs. Millie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0972 - Teri vs. Ronnie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0973 - Teri vs. Paula | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0974 - Linda vs. Steve | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0975 - Barbara vs. Phil | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0981 - Freda vs. Bonnie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0982 - Terri vs. Chris | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0983 - Pat vs. Greg | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0984 - Shirley vs. Sandi | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0985 - Rose vs. Jim | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0991 - Carin vs. Janet | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0992 - Sandy vs. Kay | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0993 - Sherry vs. Glenn | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0994 - Jeri vs. John | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 0995 - Tina vs. Sally | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1001 - Pam vs. Mary Lou | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1002 - Lorraine vs. Marilyn | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1003 - Vera vs. Denise | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1004 - Trina vs. Karen | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1005 - Dorothy vs. Mark | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1011 - Judy vs. Bill | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1012 - Ada vs. Sharon | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1013 - Debbie vs. Julie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1014 - Freda vs. Nica | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1015 - Eileen vs. Mike | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1021 - Margaret vs. Linda | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1022 - Liz vs. Barbara | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1023 - Beverly vs. Betty | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1024 - Tom vs. Donna | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1025 - Veronica vs. Hilda | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1031 - Helen vs. Les | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1032 - Shirlee vs. Lisa | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1033 - Lolly vs. Gail | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1034 - Melvia vs. David | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1035 - Sharon vs. Laurie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1041 - Donna vs. Liz | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1042 - Suzi vs, Alyce | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1043 - Marsha vs. Bill | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1044 - Laurie vs. Rhonda | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1045 - Janice vs. William | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1051 - Brenda vs. Cindy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1053 - Jan vs. Lola | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1054 - Kathy vs. James | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1055 - TC vs. Linda | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1062 - Stephanie vs. Bill | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1063 - Debbie vs. Lyn | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1064 - Kathy vs. Esther | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1065 - Stella vs. Mary | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1071 - Marlene vs. Dean | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1072 - Lucie vs. Rena | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1073 - Joann vs. Jan | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1074 - Renee vs. Lucille | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1075 - Penelope vs. Gary | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1081 - Donna vs. Judy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1082 - Jennine vs. Rich | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1083 - Kathy vs. Christie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1084 - Thayer vs. Pam | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1085 - Mollie vs. Jean | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1091 - Charlie vs. Marsha | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1092 - Marcia vs. Mary Lou | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1093 - Connie vs. Puff | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1094 - Carol vs. Andy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1095 - Teres vs. Jackie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1101 - Geri vs. Cheryl | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1102 - Peggy vs. Chris | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1103 - Debbie vs. Craig | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1104 - Autumn vs. Irene | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1105 - Wilma vs. Colleen | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1111 - Cyd vs. Fred | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1113 - Ed vs. Sylvia | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1114 - Karen vs. Donna | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1115 - Karen vs. Lucia | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1121 - Linda vs. Sammi | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1122 - Kathy vs. Joanne | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1123 - Barbara vs. Chris | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1124 - Blanche vs. Penny | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1125 - Dick vs. Sharon | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1131 - Debbie vs. Pam | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1132 - Cathy vs. Sue | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1133 - Diane vs. Brad | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1134 - Debbie vs. Sandra | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1135 - Karen vs. Alice | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1141 - Walt vs. Toni | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1142 - Arlene vs. Joslyn | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1143 - Claudia vs. Kathy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1144 - Linda vs. Marty | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1145 - Lillian vs. Paula | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1151 - Linda vs. Ken | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1152 - Mad vs. Violet | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1153 - Shelley vs. Judy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1154 - Kathleen vs. Sandy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1155 - Barbara vs. Michael | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1161 - Moni vs. Loren | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1162 - Ginny vs. Sherri | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1163 - Karen vs. Sheri | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1164 - Susan vs. Gerda | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1165 - Cathy vs. Sherie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1171 - Loren vs. Avone | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1172 - Stanna vs. Anne | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1173 - Linda vs. Lois | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1174 - Terry vs. Robyn | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1175 - Karen vs. Jane | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1181 - Cathy vs. Patty | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1182 - Linda vs. Robyn | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1183 - Prudy vs. Reta | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1184 - Peggy vs. Regina | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1185 - Cindy vs. Lynn | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1191 - Faye vs. Ed | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1192 - Patti vs. Linda | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1193 - Steve vs. Joanne | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1194 - Jill vs. Anita | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1201 - Bonnie vs. Donna | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1202 - Karen vs. Eric | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1203 - Gaylene vs. Nedra | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1204 - Lynn vs. Kathryn | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1205 - Christina vs. Scott | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1211 - Darlene vs. Hope - Happy birthday Jack! | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1212 - Teresa vs. Beanie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1213 - Howard vs. Linda | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1214 - Cathy vs. Karen | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1221 - Sunny vs. Janeen | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1222 - Terrier vs. Sharon | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1223 - Becky vs. Sherrie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1224 - Laura vs. Janiss | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1225 - Tere vs. Candy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1231 - Besty vs. Charles | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1232 - Carla vs. Candy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1233 - Linda vs. Dellamae | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1235 - Caroyl vs. Debbie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1241 - Shelley vs. Val | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1242 - Shirley vs. Nancy - Contestant wins two cars! | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1243 - Julie vs. Mark | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1244 - Bebe vs. Sonda | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1245 - Tootie vs. Pat | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1251 - Ed vs. Gill | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1976 | 1252 - Paula vs. Valerie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1253 - Barry vs. Delle | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1254 - Jan vs. Gail | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1255 - Bebe vs. Ray | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1261 - Teresa vs. Terrie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1262 - Roland vs. Isabel | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1263 - Terrie vs. Evelyn | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1264 - Rick vs. Maureen | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1265 - Hilary vs. Sheila | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1271 - Roxanne vs. Harold | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1272 - Roberta vs. Lydia | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1273 - Diane vs. Barbara | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1274 - Maureen vs. Pat | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1275 - Joan vs. Clarence | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1281 - Karen vs. Judy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1282 - Jimmy vs. Candy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1283 - Debby vs. Shirley | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1284 - Sharon vs. Georgia | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1285 - Peggy vs. Carol | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1292 - Lois vs. Phil - New bonus round format, second show of season | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1293 - April vs. Marjorie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1294 - Mary vs. Ralph | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1295 - Dawn vs. Ruth | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1301 - Violet vs. Jim | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1302 - Karen vs. Marcella | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1303 - Rita vs. Dolores | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1304 - Nancy vs. Gina | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1305 - Mary vs. Billie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1311 - Reed vs. Tommi | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1312 - Kellli vs. Barbara | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1313 - Carolyn vs. Pat | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1314 - Nancy vs. Dan | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1315 - Glenda vs. Elsie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1321 - Laurie vs. Rosalba | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1322 - Grace vs. Ilah | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1323 - Wanda vs. Bill | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1325 - John vs. Patricia | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1331 - Bruce vs. Jana | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1332 - Robert vs. Linda | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1333 - Donna vs. Fernando | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1334 - Jem vs. Henreata | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1335 - Nan vs. Jackie | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1341 - Marlene vs. Dave | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1342 - Pam vs. Fred | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1343 - Viviane vs. Dan | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1344 - Beverley vs. George | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1345 - Rosemarie vs. Mary | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1351 - Cheryl vs. Charles | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1352 - David vs. Kathy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1353 - Laura vs. Vicki | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1355 - Scott vs. Laura | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1261 - Vicki vs. Darlene | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1362 - Ken vs. Maybell | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1363 - Becky vs. Ruby | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1364 - Larry vs. Joann | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1365 - Betty vs. Debi | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1371 - John vs. Ellen | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1977 | 1372 - Pat vs. Sandy | 1stGen/Buzzr | |
| Concentration (Narz) | Jack Narz | 1978 | Linda vs. Randy | B-/SM | |
| Concentration (Bean) | Orson Bean | 1985 | Unsold Pilot #1 | A/SM | |
| Classic Concentration | Alex Trebek | 5/4/87 | 001 – Diana vs. David | 1stGen/Buzzr, A-/KNBC OC, B/WNBC OC | |
| Classic Concentration | Alex Trebek | 5/6/87 | 002 – Russ vs. Diana | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/7/87 | 003 – Todd vs. Su | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/8/87 | 004 – Todd vs. Cindy | 1stGen/Buzzr, B/OB | |
| Classic Concentration | Alex Trebek | 5/11/87 | 005 – Tammie vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/12/87 | 006 – Tammie vs. Joel | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/13/87 | 007 – Tammie vs. Jason | 1stGen/Buzzr, A-/OB | |
| Classic Concentration | Alex Trebek | 5/14/87 | 008 – Jason vs. Renee | 1stGen/Buzzr, B/OB | |
| Classic Concentration | Alex Trebek | 5/15/87 | 009 – Jason vs. Susan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/18/87 | 010 – Paula vs. Linwood | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/19/87 | 011 – Clyde vs. Paula | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/20/87 | 012 – Bob vs. Laura | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/21/87 | 013 – Jan vs. Bob | B-/OB | |
| Classic Concentration | Alex Trebek | 5/22/87 | 014 – Jan vs. Paul | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/25/87 | 015 – Barry vs. Jan | 1stGen/Buzzr, A-/OB | |
| Classic Concentration | Alex Trebek | 5/26/87 | 016 – Monica vs. Barry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/27/87 | 017 – Barry vs. Martha | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/28/87 | 018 – Greg vs. Bonnie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/29/87 | 019 – Marla vs. Cecil | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 6/1/87 | 020 – Bob vs. Marla | 1stGen/Buzzr, B+/OC | |
| Classic Concentration | Alex Trebek | 6/2/87 | 021 – Marla vs. Art | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 6/3/87 | 022 – Kelly vs. Art | 1stGen/Buzzr, B/OC | |
| Classic Concentration | Alex Trebek | 6/4/87 | 023 – Kelly vs. Vince | 1stGen/Buzzr, B/OC | |
| Classic Concentration | Alex Trebek | 6/5/87 | 024 – Robin vs. Joseph | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 6/8/87 | 025 – Robin vs. Joseph Pt. 2 | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/9/87 | 026 – Danny vs. Robin | 1stGen/Buzzr, B+/OC | |
| Classic Concentration | Alex Trebek | 6/10/87 | 027 – Reed vs. Annie | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 6/11/87 | 028 – Annie vs. Brian | 1stGen/Buzzr, B+/OC | |
| Classic Concentration | Alex Trebek | 6/12/87 | 029 – Doug vs. LaVerne | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/15/87 | 030 – Doug vs. Karen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/16/87 | 031 – Sandy vs. Steven | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/17/87 | 032 – John vs. Sandy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/18/87 | 033 – Sandy vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/19/87 | 034 – Greg vs. Vicki | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/22/87 | 035 – Meg vs. Greg | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/23/87 | 036 – Meg vs. Peter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/24/87 | 037 – Michele vs. Peter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/25/87 | 038 – Janet vs. Dan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/26/87 | 039 – Joan vs. Dan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/29/87 | 040 – Joan vs. Kevin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/30/87 | 041 – David vs. Peggine | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/1/87 | 042 – Scott vs. Linda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/2/87 | 043 – Scott vs. Cynthia | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/3/87 | 044 – Judith vs. Scott | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 7/6/87 | 045 – Julie vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/10/87 | 046 – Julie vs. Tom | 1stGen/Buzzr, A-/OB | |
| Classic Concentration | Alex Trebek | 7/20/87 | 047 – Julie vs. Tom Pt. 2 | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/22/87 | 048 – Tom vs. Hilary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/23/87 | 049 – Sten vs. Hilary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/24/87 | 050 – Sten vs. Carol | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 7/27/87 | 051 – Bob vs. Sharon | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 7/29/87 | 052 – Bob vs. Kitty | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/3/87 | 053 – Kitty vs. Mike | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 8/4/87 | 054 – Mike vs. Adriana | 1stGen/Buzzr, B/OB | |
| Classic Concentration | Alex Trebek | 8/5/87 | 055 – Linda vs. Mike | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/6/87 | 056 – Christy vs. Terry | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 8/7/87 | 057 – Christy vs. Andy | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 8/10/87 | 058 – Andy vs. Lisa | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 8/11/87 | 059 – Karen vs. Andy | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 8/12/87 | 060 – Effie vs. Bill | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 8/13/87 | 061 – Dennis vs. Effie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/14/87 | 062 – Dennis vs. Thea | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 8/17/87 | 063 – Julieanna vs. Craig | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/18/87 | 064 – Craig vs. Mary | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 8/19/87 | 065 – Craig vs. Gwenn | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 8/20/87 | 066 – Michael vs. Gwenn – Car game malfunctions | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 8/21/87 | 067 – Gwenn vs. Michael – Pokey the chihuahua appears for the first time | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 8/24/87 | 068 – Janet vs. Madrid | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/25/87 | 069 – Dori vs. Madrid | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/26/87 | 070 – Diana vs. Madrid | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/27/87 | 071 – Madrid vs. Bonita | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/28/87 | 072 – Bonita vs. Warren | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/31/87 | 073 – Warren vs. Mame | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/1/87 | 074 – Warren vs. Laura | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/2/87 | 075 – Breton vs. Laura | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/3/87 | 076 – Breton vs. Angela | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/4/87 | 077 – Max vs. Angela | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/7/87 | 078 – Max vs. Sharon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/8/87 | 079 – Pat vs. Sharon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/9/87 | 080 – Danny vs. Sharon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/10/87 | 081 – Marc vs. Sue | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/11/87 | 082 – Marc vs. Karin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/14/87 | 083 – Karin vs. Gene | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/15/87 | 084 – Eric vs. Karin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/16/87 | 085 – Cindy vs. Dan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/17/87 | 086 – Dan vs. Emily | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/18/87 | 087 – June vs. Dan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/21/87 | 088 – Jeff vs. Bobbie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/22/87 | 089 – Jeff vs. Dionne | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/23/87 | 090 – Victor vs. Gerrie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/24/87 | 091 – Gerrie vs. Ron | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/25/87 | 092 – Melia vs. Ron | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/28/87 | 093 – Melia vs. Thompson | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/29/87 | 094 – Thompson vs. Diane | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/30/87 | 095 – Thompson vs. Jennifer | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/1/87 | 096 – Helen vs. Michael | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/2/87 | 097 – Michael vs. Janeanne | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/5/87 | 098 – Michael vs. Vicki | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/6/87 | 099 – Barbie vs. Hal | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/7/87 | 100 – Rachel vs. Hal | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/8/87 | 101 – Rachel vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/9/87 | 102 – Philip vs. Stephanie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/12/87 | 103 – Stephanie vs. Kelly | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/13/87 | 104 – Stephanie vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/14/87 | 105 – John vs. Anna | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/15/87 | 106 – John vs. Yvette | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/16/87 | 107 – Yvette vs. Tyrone | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/19/87 | 108 – Yvette vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/20/87 | 109 – Frank vs. Vera | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/21/87 | 110 – Paul vs. Vera | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/22/87 | 111 – John vs. Vera | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/23/87 | 112 – Rich vs. Vera | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/26/87 | 113 – Virginia vs. Rich | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/27/87 | 114 – Virginia vs. Bob | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/28/87 | 115 – Pam vs. Bob | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/29/87 | 116 – Andrea vs. Clyde | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/30/87 | 117 – Andrea vs. Frank | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/2/87 | 118 – Timm vs. Andrea | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 11/3/87 | 119 – Greg vs. Margarita | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/4/87 | 120 – Greg vs. Kaylynn – Green Take introduced | 1stGen/Buzzr, A-/OB | |
| Classic Concentration | Alex Trebek | 11/5/87 | 121 – Mike vs. Betsy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/6/87 | 122 – Betsy vs. Dennis | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/9/87 | 123 – Diana & Rhonda vs. Craig & Suzanne – Kids Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/10/87 | 124 – Kelley & Joan vs. Tarrell & Esther – Kids Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/11/87 | 125 – Jessica & Alesia vs. Brad & Dave – Kids Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/12/87 | 126 – Donald & Paula vs. Michelle & Mike – Kids Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/13/87 | 127 – Brian & Tracy vs. Shawna & Debi – Kids Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/16/87 | 128 – Betsy vs. Carl – Around the World Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/17/87 | 129 – Sally vs. Benjamin – Around the World Week | 1stGen/Buzzr, A/RPT | |
| Classic Concentration | Alex Trebek | 11/18/87 | 130 – Sally vs. Mark – Around the World Week | 1stGen/Buzzr, A/RPT+OC | |
| Classic Concentration | Alex Trebek | 11/19/87 | 131 – Robbie vs. Nancy – Around the World Week – Last segment missing | A/RPT | |
| Classic Concentration | Alex Trebek | 11/20/87 | 132 – Robyn vs. Robbie – Around the World Week | 1stGen/Buzzr, A/RPT | |
| Classic Concentration | Alex Trebek | 11/23/87 | 133 – Mark vs. Robyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/24/87 | 134 – Rod vs. Robyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/25/87 | 135 – Rod vs. Susan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/27/87 | 136 – Paul vs. Laurie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/30/87 | 137 – Laurie vs. Gary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/1/87 | 138 – Robert vs. Stephanie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/2/87 | 139 – Robert vs. Mary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/3/87 | 140 – Monica vs. Stan – Classic Concentration is a puzzle | 1stGen/Buzzr, A-/OB | |
| Classic Concentration | Alex Trebek | 12/4/87 | 141 – Monica vs. Patrick | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/7/87 | 142 – AJ vs. Monica | 1stGen/Buzzr, B-/OB | |
| Classic Concentration | Alex Trebek | 12/9/87 | 143 – Bill vs. Gwenn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/10/87 | 144 – Bill vs. Denise | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/11/87 | 145 – Jolene vs. Bill | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/14/87 | 146 – Jeff vs. Jolene | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/15/87 | 147 – Jolene vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/17/87 | 149 – Sue vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/18/87 | 150 – Sue vs. Kevin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/21/87 | 151 – Kevin vs. Terri | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/22/87 | 152 – Mart vs. Linda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/23/87 | 153 – Anna vs. Mart | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/24/87 | 154 – Mart vs. Staci | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/28/87 | 155 – Wayne vs. Nancy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/29/87 | 156 – Joyce vs. Jackson | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/30/87 | 157 – Jackson vs. Dorothy | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 12/31/87 | 158 – Jackson vs. Helen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/1/88 | 159 – Lorraine vs. Philip | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/4/88 | 160 – Susie vs. Jeff | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/5/88 | 161 – Kathy vs. Keith | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/6/88 | 162 – Patrick vs. Kathy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/7/88 | 163 – Sandra vs. Barry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/8/88 | 164 - Sandra vs. Michael | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/11/88 | 165 - Glenn vs. Sandra | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 1/12/88 | 166 - Chuck vs. Brenda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/13/88 | 167 - Aggie vs. Chuck | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/14/88 | 168 - Chuck vs. Mary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/15/88 | 169 - Debbie vs. Dale | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/18/88 | 170 - Barry vs. Debbie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/19/88 | 171 - Mark vs. Shelley | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/20/88 | 172 - David vs. Susan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/21/88 | 173 - Mike vs. Terri | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/22/88 | 174 - Mike vs. Terri (again) | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/25/88 | 175 - Terri vs. Michael | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/26/88 | 176 - Darlene vs. Rocky | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/27/88 | 177 - Darlene vs. Ron | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/29/88 | 179 - Laura vs. Patrick | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/1/88 | 180 - Paula vs. George | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/2/88 | 181 - Paula vs. Rob | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/3/88 | 182 - Ron vs. Linda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/4/88 | 183 - Linda vs. Carlos | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/5/88 | 184 - Claradell vs. Peter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/8/88 | 185 - Cheryl vs. Peter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/9/88 | 186 - Cindy vs. Peter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/10/88 | 187 - Peter vs. Gloria | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/11/88 | 188 - Marti vs. Larry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/12/88 | 189 - Larry vs. Judi | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/15/88 | 190 - Judi vs. Peter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/16/88 | 191 - Michael vs. Ina | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/17/88 | 192 - Pat vs. Michael | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/18/88 | 193 - Susan vs. Gene | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/19/88 | 194 - Ross vs. Leslie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/22/88 | 195 - Sue vs. Brady - South Seas Adventure Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/23/88 | 196 - Kathy vs. Brady - South Seas Adventure Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/24/88 | 197 - Norm vs. Molly - South Seas Adventure Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/25/88 | 198 - Janet vs. Norm - South Seas Adventure Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/26/88 | 199 - Glori vs. Layne - South Seas Adventure Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/29/88 | 200 - Layne vs. Arleen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/1/88 | 201 - Arlene vs. George | 1stGen/Buzzr, A-/OB | |
| Classic Concentration | Alex Trebek | 3/2/88 | 202 - Scott vs. Dorothy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/3/88 | 203 - Shirley vs. Keith | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/4/88 | 204 - Shirley vs. Pete | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/7/88 | 205 - Pete vs. Sandra | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/8/88 | 206 - Dany vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/9/88 | 207 - Mark vs. Beth | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/10/88 | 208 - Mike vs. Sue | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/11/88 | 209 - Sue vs. Hutton | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/14/88 | 210 - Joy vs. Robert | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/15/88 | 211 - Robert vs. Diane - First show with Two Strikes format | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/16/88 | 212 - Diane vs. Kevin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/17/88 | 213 - Wilson vs. Cheryl | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/18/88 | 214 - Kevin vs. Kathy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/21/88 | 215 - Kevin vs. Kathy (again) | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/22/88 | 216 - Lisa vs. Tommy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/23/88 | 217 - Mike vs. Dorrie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/24/88 | 218 - Dorrie vs. Mike | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/25/88 | 219 - Cynthia vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/28/88 | 220 - Cynthia vs. Jeffrey | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/29/88 | 221 - Cynthia vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/30/88 | 222 - Blanche vs. Lenny | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/31/88 | 223 - Barbet vs. Bill | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/1/88 | 224 - Barbet vs. Dan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/4/88 | 225 - Freddy vs. Barbet | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/5/88 | 226 - Roger vs. Linda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/6/88 | 227 - Linda vs. Bob | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/7/88 | 228 - Bob vs. Ann | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/8/88 | 229 - Wendell vs. Janet | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/11/88 | 230 - Shelley vs. Wendell | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/12/88 | 231 - Connie vs. Michael | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/13/88 | 232 - Michael vs. Connie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/14/88 | 233 - Michael vs. Amy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/15/88 | 234 - Jim vs. Mae | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/18/88 | 235 - Mae vs. Bill | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/19/88 | 236 - Mae vs. Corky | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/20/88 | 237 - Jack vs. Adrienne | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/21/88 | 238 - Jack vs. Angela | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/22/88 | 239 - Jack vs. Angela (again) | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/25/88 | 240 - Angela vs. Anthony | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/26/88 | 241 - Linda vs. Colin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/27/88 | 242 - Colin vs. Kathy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/28/88 | 243 - Michael vs. Bonnie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/29/88 | 244 - Bonnie vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/2/88 | 245 - Bonnie vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/3/88 | 246 - Susie vs. Reggie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/4/88 | 247 - Dan vs. Rita | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/5/88 | 248 - Dan vs. Rita (again) | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/6/88 | 249 - Rita vs. Sandy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/9/88 | 250 - Marita vs. Gregg | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/10/88 | 251 - Marita vs. Stu | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/11/88 | 252 - Christian vs. Marita | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/12/88 | 253 - Lisa vs. Todd | 1stGen/Buzzr, B/OB | |
| Classic Concentration | Alex Trebek | 5/13/88 | 254 - Jerry vs. Pat | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/16/88 | 255 - Joan vs. Jerry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/17/88 | 256 - Jeff vs. Joan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/18/88 | 257 - Jeff vs. Carol | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/19/88 | 258 - Jim vs. Tania | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/20/88 | 259 - Jim vs. Kari | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/23/88 | 260 - Steve vs. Tina | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/24/88 | 261 - Susan vs. Michael | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/25/88 | 262 - Richard vs. Susan - 1st anniversary show | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/26/88 | 263 - Pattie vs. Larry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/27/88 | 264 - Pattie vs. Dennis | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/30/88 | 265 - Don vs. Julia | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/31/88 | 266 - Don vs. Barbara | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/1/88 | 267 - Barbara vs. Peter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/2/88 | 268 - Peter vs. Deanna | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/3/88 | 269 - Mike vs. Julia | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/6/88 | 270 - Jerry vs. Barbara | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/7/88 | 271 - Lisa Kay vs. Jerry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/8/88 | 272 - Lisa Kay vs. Rod | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/9/88 | 273 - Sara vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/10/88 | 274 - Sara vs. David (again) | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/13/88 | 275 - Sara vs. Bob | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/14/88 | 276 - Peter vs. Gretchen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/15/88 | 277 - Stephen vs. Gretchen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/16/88 | 278 - Warren vs. Honey | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/17/88 | 279 - Warren vs. Cindy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/20/88 | 280 - Warren vs. Lynda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/21/88 | 281 - Lynda vs. Bob | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/22/88 | 282 - Bob vs. Annette | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/23/88 | 283 - Sue vs. Bob | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/24/88 | 284 - Sandra vs. Toby | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/27/88 | 285 - Toby vs. Carol | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/28/88 | 286 - Toby vs. Susan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/29/88 | 287 - Sue vs. Stephen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/30/88 | 288 - Sue vs. Gene | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/12/88 | 295 - Steve vs. Jody | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/13/88 | 296 - Steve vs. Adrienne | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/18/88 | 299 - Kyle vs. Dottie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/19/88 | 300 - Cyndi vs. Gary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/20/88 | 301 - Gary vs. Valerie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/21/88 | 302 - Jim vs. Stacy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/22/88 | 303 - Stacy vs. Dwight | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/25/88 | 304 - Dwight vs. Bernadette | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/26/88 | 305 - Bernadette vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/27/88 | 306 - Anne vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/28/88 | 307 - David vs. Ramona | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/29/88 | 308 - Brian vs. Kim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/1/88 | 309 - Brian vs. Trish | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/2/88 | 310 - Brian vs. Trish (again) | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/3/88 | 311 - Senia vs. Tom | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/4/88 | 312 - Joe vs. Tina | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/5/88 | 313 - Julie vs. Richard | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/8/88 | 314 - Sheila vs. Richard | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/9/88 | 315 - Julie vs. Troy - First show with Best 2 out of 3 format | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/10/88 | 316 - Troy vs. Judy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/11/88 | 317 - Troy vs. Lauri | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/12/88 | 318 - Carolyn vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/15/88 | 319 - Carolyn vs. Danny | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/16/88 | 320 - Danny vs. Sherlyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/17/88 | 321 - Danny vs. Ginny | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/18/88 | 322 - Danny vs. Ronlyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/19/88 | 323 - Mitch vs. Jennifer | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/22/88 | 324 - Mitch vs. Julie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/5/88 | 334 - Caprice vs. Rodney | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/6/88 | 335 - Robert vs. Kaye | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/7/88 | 336 - Robert vs. Megan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/8/88 | 337 - Megan vs. Phil | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/9/88 | 338 - Lynn vs. Larry | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 9/12/88 | 339 - Lynn vs. Mark | 1stGen/Buzzr, A-/OB | |
| Classic Concentration | Alex Trebek | 9/13/88 | 340 - Mark vs. Leah | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 9/14/88 | 341 - Mark vs. Ann | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/15/88 | 342 - Devon vs. Ann | 1stGen/Buzzr, A/OC | |
| Classic Concentration | Alex Trebek | 9/16/88 | 343 - Robin vs. Mark | 1stGen/Buzzr, | | |
| Classic Concentration | Alex Trebek | 9/19/88 | 344 - Robin vs. Mark (again) | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/20/88 | 345 - Robin vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/21/88 | 346 - Robin vs. Stephen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/22/88 | 347 - Kari vs. Charles | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/23/88 | 348 - Trish vs. Carl | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/26/88 | 349 - Carl vs. Tammi | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/27/88 | 350 - Carl vs. Shauna | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/28/88 | 351 - Shauna vs. Shawn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/29/88 | 352 - Shawn vs. Robin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/30/88 | 353 - Philip vs. Helene | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 10/3/88 | 354 - Helene vs. Mike | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/4/88 | 355 - Helene vs. Richard | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 10/5/88 | 356 - Helene vs. Tim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/6/88 | 357 - Sonja vs. Rich | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/7/88 | 358 - Rich vs. Jerilyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/10/88 | 359 - Jerilyn vs. Shawn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/11/88 | 360 - Shawn vs. Nadeane | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/12/88 | 361 - Bill vs. Jo Anne | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/13/88 | 362 - Bill vs. Julia | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/14/88 | 363 - Ted vs. Donna | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/17/88 | 364 - Donna vs. Teddy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/18/88 | 365 - Teddy vs. Madelon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/19/88 | 366 - Teddy vs. Valerie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/20/88 | 367 - Valerie vs. Cal | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/21/88 | 368 - Valerie vs. Terri | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/1/88 | 375 - Judge vs. Nancy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/2/88 | 376 - Nancy vs. Walter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/3/88 | 377 - Nancy vs. Rocky | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/4/88 | 378 - Rocky vs. Doris | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/7/88 | 379 - Angie vs. Ed | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/8/88 | 380 - Angie vs. Kurt | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/9/88 | 381 - Kurt vs. Kathy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/10/88 | 382 - Kathy vs. Mike | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/11/88 | 383 - Mike vs. Helen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/21/88 | 389 - Denise vs. Ken | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/22/88 | 390 - Gail vs. Thomas | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/23/88 | 391 - Thomas vs. Patti | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/28/88 | 392 - Thomas vs. Joyce | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/29/88 | 393 - Joyce vs. Anthony | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/30/88 | 394 - Joyce vs. Greg | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/1/88 | 395 - John vs. Debra | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/2/88 | 396 - Debra vs. Lee | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/5/88 | 397 - Debra vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/6/88 | 398 - Cathy vs. Jay | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/7/88 | 399 - Cathy vs. Len | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/8/88 | 400 - Len vs. Joy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/9/88 | 401 - Joy vs. Garrett | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/12/88 | 402 - Jerry vs. Kay | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/13/88 | 403 - Jerry vs. Alison | B+/OC, 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/14/88 | 404 - Alison vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/15/88 | 405 - Jay vs. Susan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/16/88 | 406 - Jay vs. Pamela | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/19/88 | 407 - Jay vs. Nora | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/20/88 | 408 - Nora vs. Jeff | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/21/88 | 409 - Lisa vs. Brian | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/22/88 | 410 - Brian vs. Kem | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/23/88 | 411 - Kem vs. Kevin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/26/88 | 412 - Kevin vs. Vicky | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/27/88 | 413 - Cathy vs. Doug | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/28/88 | 414 - Doug vs. Shirlee | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/29/88 | 415 - Doug vs. Amy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/30/88 | 416 - Doug vs. DJ | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/3/89 | 417 - Doug vs. Janis | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/4/89 | 418 - Janis vs. Carole | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/5/89 | 419 - Dennis vs. Randy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/6/89 | 420 - Randy vs. Dennis | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/9/89 | 421 - Randy vs. Blanche | 1stGen/Buzzr, B+/OC | |
| Classic Concentration | Alex Trebek | 1/10/89 | 422 - Randy vs. Darlene | 1stGen/Buzzr, B+/OC | |
| Classic Concentration | Alex Trebek | 1/11/89 | 423 - Darlene vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/12/89 | 424 - David vs. Diane | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/13/89 | 425 - Diane vs. Steven | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/16/89 | 426 - Joel vs. Cheerine | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/17/89 | 427 - Cheerine vs. Kathy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/18/89 | 428 - Kathy vs. Daniel | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/19/89 | 429 - Kathy vs. Alan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/23/89 | 430 - Danny vs. Jo | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/24/89 | 431 - Danny vs. Benita | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/25/89 | 432 - Danny vs. Lisa | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/26/89 | 433 - Danny vs. Stephen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/27/89 | 434 - Stephen vs. Karen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/30/89 | 435 - Karen vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/31/89 | 436 - Karen vs. Kristi | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/1/89 | 437 - Karen vs. Andy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/2/89 | 438 - Sue vs. Tom | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/3/89 | 439 - Sue vs. Rick | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/6/89 | 440 - Sue vs. Kirk | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/7/89 | 441 - Kirk vs. Odette | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/8/89 | 442 - Steve vs. Linda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/9/89 | 443 - Steve vs. Jerri | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/10/89 | 444 - Jerri vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/13/89 | 445 - Dan & Annette vs. James & Aly - Celebration of Love Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/14/89 | 446 - Bruce & Melissa vs. David & Mary - Celebration of Love Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/16/89 | 448 - Brian & Teeni vs. John & Carrie - Celebration of Love Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/17/89 | 449 - Curtis & Diane vs. Sal & Alice - Celebration of Love Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/27/89 | 450 - Jim vs. Eric | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/28/89 | 451 - Eric vs. Meredith | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/1/89 | 452 - Pam vs. Chris | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/2/89 | 453 - Pam vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/3/89 | 454 - Pam vs. Suzy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/20/89 | 455 - Andy vs. Sherrie - College Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/21/89 | 456 - Jeff vs. Julie - College Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/22/89 | 457 - Stephanie vs. Robert - College Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/24/89 | 459 - Thom vs. Brett - College Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/6/89 | 460 - Pam vs. Tom | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/7/89 | 461 - Pam vs. Bill | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/8/89 | 462 - Helen vs. Larry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/10/89 | 464 - Phyllis vs. Lisa | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/13/89 | 465 - Lisa vs. Corky | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/14/89 | 466 - Corky vs. Sharon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/15/89 | 467 - Flo vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/16/89 | 468 - Flo vs. Russ | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/17/89 | 469 - Russ vs. Sherri | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/20/89 | 470 - Russ vs. Eden | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/21/89 | 471 - Eden vs. Jon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/22/89 | 472 - Jon vs. Jessica | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/23/89 | 473 - Suzee vs. Gary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/24/89 | 474 - Suzee vs. Ross | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/27/89 | 475 - Suzee vs. Kevin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/28/89 | 476 - Suzee vs. Don | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/29/89 | 477 - Suzee vs. Michael | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/30/89 | 478 - Michael vs. Laurie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/31/89 | 479 - Michael vs. Sharon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/3/89 | 480 - Devon vs. Lisa - Tournament of Champions | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/4/89 | 481 - Alison vs. Tina - Tournament of Champions | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/6/89 | 483 - Julie vs. Reggie - Touranement of Champions | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/7/89 | 484 - Sue vs. Barry - Tournament of Champions | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/10/89 | 485 - Bill vs. Marge | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/11/89 | 486 - Bill vs. Dana | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/12/89 | 487 - Bill vs. Dee | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/13/89 | 488 - Dee vs. Julie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/14/89 | 489 - Dee vs. Scott | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/18/89 | 491 - Susan vs. Lars | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/19/89 | 492 - Lars vs. Cindy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/20/89 | 493 - Lars vs. Emilie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/21/89 | 494 - Ted vs. Veronica | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/24/89 | 495 - Veronica vs. Robert | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/25/89 | 496 - Robert vs. Diane | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/27/89 | 498 - Diane vs. Craig | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/28/89 | 499 - Diane vs. Dave | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/1/89 | 500 - Diane vs. Clarissa | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/2/89 | 501 - Elisa vs. Kent | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/3/89 | 502 - Kent vs. Laura | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/4/89 | 503 - Kent vs. Judy | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 5/5/89 | 504 - Judy vs. Vann | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/8/89 | 505 - Judy vs. Greg | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/9/89 | 506 - Pamela vs. Lars | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/10/89 | 507 - Lars vs. Mary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/11/89 | 508 - Mary vs. Eric | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/12/89 | 509 - Mary vs. Sean | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/15/89 | 510 - Mary vs. Scott | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/16/89 | 511 - Parker vs. Debbie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/17/89 | 512 - Debbie vs. Martin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/18/89 | 513 - Tom vs. Sandy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/19/89 | 514 - Sandy vs. Alan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/22/89 | 515 - Brad vs. Tania - Summer Fun in the Sun Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/23/89 | 516 - Mark vs. Monica - Summer Fun in the Sun Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/24/89 | 517 - Steve vs. Michele - Summer Fun in the Sun Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/25/89 | 518 - Frank vs. Maria - Summer Fun in the Sun Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/26/89 | 519 - Scott vs. Marilyn - Summer Fun in the Sun Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/29/89 | 520 - Sandy vs. Dave | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/30/89 | 521 - Sandy vs. Craig | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/31/89 | 522 - Craig vs. Mary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/1/89 | 523 - Craig vs. Andrea | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/3/89 | 525 - Elaine vs. Jeff | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/4/89 | 526 - Jeff vs. Terri | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/7/89 | 527 - Jeff vs. Gay | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/8/89 | 528 - Michael vs. Luella | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/12/89 | 529 - Michael vs. Pete | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/13/89 | 530 - Michael vs. Marlene | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/14/89 | 531 - Marlene vs. Chris | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/15/89 | 532 - Marlene vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/16/89 | 533 - Richard vs. Kathleen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/19/89 | 534 - Kathleen vs. Marty | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/20/89 | 535 - Marty vs. Patty | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/21/89 | 536 - Anna vs. Dave | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/22/89 | 537 - Dave vs. Kay | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/23/89 | 538 - Dave vs. Victor | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/26/89 | 539 - Michael vs. Kathie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/27/89 | 540 - Kathie vs. Manny | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/27/89 | 541 - Manny vs. Gretchen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/30/89 | 543 - Gretchen vs. Rob | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/5/89 | 544 - Gretchen vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/6/89 | 550 - Gretchen vs. Rick | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/7/89 | 551 - Rick vs. Jill | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/17/89 | 552 - Donna vs. Bruce | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/18/89 | 553 - Donna vs. Matt | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/19/89 | 554 - Matt vs. Leslie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/20/89 | 555 - Leslie vs. Joe | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/21/89 | 556 - Leslie vs. Scott | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/24/89 | 557 - Michael vs. Linda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/25/89 | 558 - Michael vs. Rhonda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/26/89 | 559 - Steven vs. Marcie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/27/89 | 560 - Marcie vs. Steve | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/28/89 | 561 - Rick vs. Becky - Marc Breslow's birthday! | A/OB | |
| Classic Concentration | Alex Trebek | 7/31/89 | 562 - Becky vs. Thom | 1stGen/Buzzr, A/OB | |
| Classic Concentration | Alex Trebek | 8/1/89 | 563 - Paul vs. Janine | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/2/89 | 564 - Janine vs. Chase | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/3/89 | 565 - Chase vs. Rose | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/4/89 | 566 - Chase vs. Rebeca | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/7/89 | 567 - Rebeca vs. Janet | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/8/89 | 568 - Rachel vs. Joe | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/10/89 | 570 - Joe vs. Kathy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/11/89 | 571 - Kathy vs. Don | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/14/89 | 572 - Gary vs. Jennifer | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/15/89 | 573 - Jennifer vs. Steve - Salute to Woodstock | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/16/89 | 574 - Jennifer vs. Jeff - Salute to Woodstock | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/17/89 | 575 - Tricia vs. David - Salute to Woodstock | 1stGen/Buzzr, A-/OB | |
| Classic Concentration | Alex Trebek | 8/18/89 | 576 - David vs. Phyllis | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/21/89 | 577 - Joan vs. Marc | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/22/89 | 578 - Marc vs. Mike | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/24/89 | 580 - Mike vs. Gayle | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/25/89 | 581 - Chris vs. Jann | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/28/89 | 582 - Jann vs. Tim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/30/89 | 584 - Noah vs. Kathleen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/31/89 | 585 - Alan vs. Lisa | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/1/89 | 586 - Lisa vs. Scott | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/4/89 | 587 - Spencer vs. Kristi | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/5/89 | 588 - Bruce vs. Cynthia | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/6/89 | 589 - Cynthia vs. Qualin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/7/89 | 590 - Cynthia vs. Ron | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/8/89 | 591 - Ron vs. Cynthia - Cynthia returns due to an error | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/11/89 | 592 - Valerie vs. Andy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/12/89 | 593 - Andy vs. Patti | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/13/89 | 594 - Patti vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/15/89 | 596 - Bill vs. Sandra | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/18/89 | 597 - Sandra vs. Steve | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/19/89 | 598 - Sandra vs. Joyce | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/20/89 | 599 - Linda vs. Jeff | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/21/89 | 600 - Jeff vs. Jennifer | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/25/89 | 602 - Mark vs. Krystal - College Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/26/89 | 603 - Jennifer vs. Eric - College Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/27/89 | 604 - Joel vs. Felicia - College Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/28/89 | 605 - Kyle vs. Andrea - College Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/29/89 | 606 - Doug vs. Lisa - College Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/2/89 | 607 - Michelle vs. Steve | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/3/89 | 608 - Ed vs. Norma | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/4/89 | 609 - Ed vs. Gretchen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/5/89 | 610 - Ed vs. Michelle | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/6/89 | 611 - Theresa vs. Keith | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/9/89 | 612 - Keith vs. Dottie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/10/89 | 613 - Keith vs. Jan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/11/89 | 614 - Keith vs. Tom | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/13/89 | 616 - Ray vs. Gary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/16/89 | 617 - Gary vs. Dan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/17/89 | 618 - Gary vs. Nancy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/18/89 | 619 - Nancy vs. Tom | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/19/89 | 620 - Nancy vs. Matt | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/20/89 | 621 - Marlys vs. Fernando | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/23/89 | 622 - Marlys vs. Linda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/25/89 | 624 - Marlys vs. Rick | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/26/89 | 625 - Mark vs. Katherine | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/27/89 | 626 - Mark vs. Donna | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/30/89 | 627 - Mark vs. Jane | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/1/89 | 629 - Mark vs. Tom | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/2/89 | 630 - Tom vs. Marsha | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/3/89 | 631 - Marsha vs. Brian | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/6/89 | 632 - Brian vs. Doree | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/7/89 | 633 - Brian vs. Patty | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/8/89 | 634 - Patty vs. Michael | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/9/89 | 635 - Michael vs. Shelley | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/10/89 | 636 - Michael vs. Rhonda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/14/89 | 638 - Stephen & Davis vs. Lori & Lisa - Twins Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/15/89 | 639 - Karin & Kathy vs. Cece & Carrie - Twins Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/16/89 | 640 - Ron & John vs. Shannon & Sharon - Twins Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/17/89 | 641 - Joan & Janice vs. Byron & Allen - Twins Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/20/89 | 642 - Michelle vs. Scott | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/21/89 | 643 - Scott vs. Eleanor | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/24/89 | 645 - Delilah vs. Brian | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/27/89 | 646 - Darryl vs. Karen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/28/89 | 647 - Daryll vs. Nora | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/30/89 | 649 - Kate vs. Barry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/1/89 | 650 - Kate vs. Courtney | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/4/89 | 651 - Kate vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/5/89 | 652 - Mark vs. Athelia | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/6/89 | 653 - Athelia vs. Carlton | B-/OB | |
| Classic Concentration | Alex Trebek | 12/7/89 | 654 - Andrew vs. CJ | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/8/89 | 655 - Andrew vs. Holly | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/11/89 | 656 - Andrew vs. Andrea | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/12/89 | 657 - Michele vs. Holly | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/13/89 | 658 - Holly vs. Dan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/14/89 | 659 - Dan vs. Trista | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/15/89 | 660 - Sharon vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/18/89 | 661 - John vs. Sylvia | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/19/89 | 662 - Sylvia vs. Bill | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/20/89 | 663 - Sylvia vs. Ken Lee | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/21/89 | 664 - Ken Lee vs. Carolyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/22/89 | 665 - Lisa vs. Rick | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/26/89 | 666 - Rick vs. Heather | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/27/89 | 667 - Rick vs. Jacque | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/28/89 | 668 - Jacque vs. Rod | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/29/89 | 669 - Rod vs. Bettie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/2/90 | 670 - Bettie vs. Mike | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/3/90 | 671 - Mike vs. Julie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/5/90 | 673 - Demian vs. Lisa | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/8/90 | 674 - Demian vs. Lillie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/9/90 | 675 - Lillie vs. Jeff | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/10/90 | 676 - Jeff vs. Becky | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/11/90 | 677 - Brett vs. William | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/12/90 | 678 - William vs. Laura | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/15/90 | 679 - Laura vs. Stephen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/16/90 | 680 - Brett vs. Michelle | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/17/90 | 681 - Michelle vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/18/90 | 682 - Jim vs. Karyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/19/90 | 683 - Karyn vs. Richard | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/22/90 | 684 - Karyn vs. Steve | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/24/90 | 686 - Andy vs. Ernabel | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/25/90 | 687 - Andy vs. Katrina | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/26/90 | 688 - Andy vs. Kerri | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/29/90 | 689 - Andy vs. Georgeann | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/30/90 | 690 - Steve vs. Heidi | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/31/90 | 691 - Steve vs. Robyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/1/90 | 692 - George vs. Brad | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/2/90 | 693 - Brad vs. Sammy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/5/90 | 694 - Sammy vs. Walter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/6/90 | 695 - Walter vs. Mona | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/7/90 | 696 - Mona vs. Michael | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/8/90 | 697 - Chris vs. Mindy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/9/90 | 698 - Chris vs. Cynthia | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/12/90 | 699 - Cynthia vs. Roy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/13/90 | 700 - Roy vs. Laura | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/14/90 | 701 - Diana vs. Julio | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/15/90 | 702 - Diana vs. Sean | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/16/90 | 703 - Sean vs. Tamra | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/17/90 | 704 - Tamra vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/20/90 | 705 - Michael vs. Michele | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/21/90 | 706 - Michael vs. Janet | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/22/90 | 707 - Michael vs. Cammy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/23/90 | 708 - Tony vs. Larry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/26/90 | 709 - Tony vs. Mary Ann | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/27/90 | 710 - Tony vs. Marjorie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/28/90 | 711 - Tony vs. Wanda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/1/90 | 712 - Tony vs. Marsha | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/2/90 | 713 - Chris vs. Jan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/5/90 | 714 - Chris vs. Sunnie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/6/90 | 715 - Sunnie vs. Neil | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/7/90 | 716 - Neil vs. Konnie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/8/90 | 717 - Frank vs. Laura | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/9/90 | 718 - Laura vs. Wally | 1stGen/Buzzr, B/OB | |
| Classic Concentration | Alex Trebek | 3/12/90 | 719 - Laura vs. Rick | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/13/90 | 720 - Laura vs. Karl | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/14/90 | 721 - Danna vs. Russell | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/15/90 | 722 - Danna vs. Melissa | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/16/90 | 723 - Danna vs. Bill | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/19/90 | 724 - Danna vs. Don | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/20/90 | 725 - Ginny vs. Kevin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/21/90 | 726 - Ginny vs. Dannie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/22/90 | 727 - Tom vs. Dan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/23/90 | 728 - Jill vs. Ed | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/26/90 | 729 - Jill vs. Ralph | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/27/90 | 730 - Jill vs. Doug | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/28/90 | 731 - Jill vs. Terrell | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 3/29/90 | 732 - Susan vs. Blue | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/2/90 | 734 - Susan vs. Greg | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/3/90 | 735 - Aimee vs. Jason | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/4/90 | 736 - Jason vs. Jean | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/5/90 | 737 - Jason vs. Natalie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/6/90 | 738 - Roxi vs. Bob | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/9/90 | 739 - Roxi vs. Debo | 1stGen/Buzzr, B/OC | |
| Classic Concentration | Alex Trebek | 4/10/90 | 740 - Lance vs. "Greedy" Wendy | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 4/11/90 | 741 - Wendy vs. Sean | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/13/90 | 743 - Fran vs. Elizabeth | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/16/90 | 744 - Fran vs. Chris | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/17/90 | 745 - Fran vs. Annette | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/18/90 | 746 - Eileen vs. Ray | 1stGen/Buzzr, A-/OC | |
| Classic Concentration | Alex Trebek | 4/19/90 | 747 - Ray vs. Marnie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/20/90 | 748 - Marnie vs. Vicki | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/23/90 | 749 - Marnie vs. Travis | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/24/90 | 750 - Travis vs. Jodee | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/25/90 | 751 - Rebecca vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/26/90 | 752 - Mark vs. Steve | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/27/90 | 753 - Steve vs. Melinda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 4/30/90 | 754 - Melinda vs. Tim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/1/90 | 755 - Tim vs. Susan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/2/90 | 756 - Susan vs. Larry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/3/90 | 757 - Larry vs. Jacqueline | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/4/90 | 758 - Larry vs. Gabe - Anniversary show, Cinco de Mayo celebration | B/OB | |
| Classic Concentration | Alex Trebek | 5/7/90 | 759 - Jeanne vs. Lyle | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/8/90 | 760 - Lyle vs. Desta | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/9/90 | 761 - Todd vs. Candy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/10/90 | 762 - Todd vs. Lilia | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/11/90 | 763 - Lilia vs. Matt | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/14/90 | 764 - Matt vs. Peter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/15/90 | 765 - Naomi vs. Paul | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/16/90 | 766 - Naomi vs. Fritz | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/17/90 | 767 - Fritz vs. Mimi | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/18/90 | 768 - Mimi vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/21/90 | 769 - Diana vs. Mayur - Summer Fun in the Sun Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/22/90 | 770 - Tim vs. Cindy - Summer Fun in the Sun Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/23/90 | 771 - Andy vs. Tonya - Summer Fun in the Sun Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/24/90 | 772 - Sheri vs. Rick - Summer Fun in the Sun Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/25/90 | 773 - Jeanette vs. Brad - Summer Fun in the Sun Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/28/90 | 774 - Mimi vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/29/90 | 775 - David vs. Dan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/30/90 | 776 - David vs. Marcelle | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 5/31/90 | 777 - Joe vs. Deedra | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/1/90 | 778 - Deedra vs. Jeanie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/4/90 | 779 - Linda vs. Ron | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/5/90 | 780 - Linda vs. Carrie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/6/80 | 781 - LInda vs. Howard | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/7/90 | 782 - Howard vs. Lisa | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/11/90 | 783 - Howard vs. Kirk | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/12/90 | 784 - Michael vs. Evelyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/13/90 | 785 - Evelyn vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/14/90 | 786 - Evelyn vs. Darrin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/15/90 | 787 - Carrie vs. Jamie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/18/90 | 788 - Carrie vs. Jeff | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/19/90 | 789 - Jeff vs. Janis | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/20/90 | 790 - Beth vs. Joe | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/22/90 | 792 - Julie vs. Al | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/25/90 | 793 - Julie vs. Irene | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/26/90 | 794 - Julie vs. Ray | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/27/90 | 795 - Julie vs. Garrett | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/28/90 | 796 - Julie vs. Garrett again | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 6/29/90 | 797 - Kristie vs. Terry - 2 strikes format returns | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/3/90 | 798 - Kristie vs. Terry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/6/90 | 799 - Judie vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/9/90 | 800 - Judie vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/10/90 | 801 - Leanna vs. Edward | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/11/90 | 802 - Diane vs. Edward | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/12/90 | 803 - Diane vs. Edward | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/13/90 | 804 - Kathleen vs. Edward | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/16/90 | 805 - Keith vs. Kim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/17/90 | 806 - Laura vs. George | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/18/90 | 807 - Laura vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/19/90 | 808 - Donna vs. Henry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/20/90 | 809 - Gina vs. Henry | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/23/90 | 810 - Gina vs. Curt | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/24/90 | 811 - Bonnie vs. Anthony | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/25/90 | 812 - Donna vs. Anthony | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/26/90 | 813 - Bob vs,. Anthony | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/27/90 | 814 - Bob vs. Anne | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/30/90 | 815 - Andrew vs. Anne | A-/OC, 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 7/31/90 | 816 - Andrew vs. Beverly | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/1/90 | 817 - Bernie Bob vs. Ann | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/3/90 | 819 - Garrett vs. Coleen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/6/90 | 820 - Merle vs. Coleen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/7/90 | 821 - Wayne vs. Coleen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/8/90 | 822 - Wayne vs. Debra | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/9/90 | 823 - Mick vs. Debra | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/10/90 | 824 - Mary vs. Ralph | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/13/90 | 825 - Carolyn vs. Ralph | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/14/90 | 826 - Carolyn vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/15/90 | 827 - Carolyn vs. Stuart | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/16/90 | 828 - Debbie vs. Stuart | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/17/90 | 829 - Stacey vs. Stuart | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/20/90 | 830 - Stephanie vs. Stuart | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/21/90 | 831 - Stephanie vs. Chris | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/22/90 | 832 - Nina vs. David | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/24/90 | 834 - Ruth vs. Scott | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/27/90 | 835 - Bryna vs. Scott | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/28/90 | 836 - Bryna vs. Matt | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/29/90 | 837 - Darlene vs. Matt | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 8/31/90 | 839 - Joe vs. Kelly | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/3/90 | 840 - Joe vs. Susan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/4/90 | 841 - Michael vs. Susan | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/5/90 | 842 - Michael vs. Bruce | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/6/90 | 843 - Paige vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/7/90 | 844 - Paige vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/10/90 | 845 - Lori vs. Damon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/11/90 | 846 - Viiu vs. Damon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/12/90 | 847 - Viiu vs. Tim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/13/90 | 848 - Viiu vs. Tim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/14/90 | 849 - Faith vs. Tim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/17/90 | 850 - Patty vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/18/90 | 851 - Nikki vs. Rick - BB King makes an appearance | A-/OC, 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/19/90 | 852 - Michelle vs. Rick | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/20/90 | 853 - Michelle vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/21/90 | 854 - Stacy vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/24/90 | 855 - Stacy vs. Tom | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/25/90 | 856 - Julie vs. Tom | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/26/90 | 857 - Kelly vs. Tom | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/27/90 | 858 - Kelly vs. Stuart | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/28/90 | 859 - Sylvia vs. Stuart | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/2/90 | 861 - Dave vs. Sharla | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/3/90 | 862 - Dave vs. Sharla | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/4/90 | 863 - Mike vs. Jodi | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/5/90 | 864 - Mike vs. Karen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/8/90 | 865 - Denny vs. Karen | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/9/90 | 866 - Beverly vs. Reese | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/10/90 | 867 - Beverly vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/11/90 | 868 - Bettye vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/12/90 | 869 - Gordon vs. Sharon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/15/90 | 870 - Gordon vs. Sharon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/16/90 | 871 - Joanna vs. Mike | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/17/90 | 872 - Alice vs. Steve | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/18/90 | 873 - Alice vs. Todd | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/19/90 | 874 - Alice vs. Manny | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/22/90 | 875 - Karen vs. Manny | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/23/90 | 876 - Karen vs. Sean | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/24/90 | 877 - Liz vs. Sean | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/25/90 | 878 - Liz vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/26/90 | 879 - Stan vs. Lynette | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/29/90 | 880 - Joanne vs. Steve - Halloween Week | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 10/30/90 | 881 - Angela vs. David - Halloween Week | B+/OB, 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/1/90 | 883 - Claire vs. Ray | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/2/90 | 884 - Martha vs. Doug | A-/OB, 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/5/90 | 885 - Bridgette vs. Doug | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/6/90 | 886 - Pam vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/7/90 | 887 - Pam vs. Christopher | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/12/90 | 888 - Wendy vs. Georgeanne - Tournament of Champions | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/13/90 | 889 - Dave vs. Jim - Tournament of Champions | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/14/90 | 890 - Stan vs. Dan - Tournament of Champions | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/15/90 | 891 - Ken Lee vs. Karen - Tournament of Champions | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/16/90 | 892 - Mark vs. Stuart - Tournament of Champions | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/8/90 | 893 - Christopher vs. Heidi | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/9/90 | 894 - Dean vs. Heidi | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/19/90 | 895 - Dean vs. Diana | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/20/90 | 896 - Anthony vs. Maytee | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/21/90 | 897 - Anthony vs. Sandy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/26/90 | 898 - Phil vs. Theresa | A-/OC, 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/27/90 | 899 - Phil vs. Theresa | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/28/90 | 900 - Sharon vs. Gary | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/29/90 | 901 - Sharon vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 11/30/90 | 902 - Laura vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/3/90 | 903 - Bruce vs. Jim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/4/90 | 904 - Bruce vs. Sandy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/5/90 | 905 - Jeff vs. Suzanne | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/6/90 | 906 - Candace vs. Peter | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/7/90 | 907 - Candace vs. Tony | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/10/90 | 908 - Candace vs. Greg | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/11/90 | 909 - Rick vs. Leslie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/12/90 | 910 - Rick vs. Shannon | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/13/90 | 911 - Tim vs. Wendy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/14/90 | 912 - Tim vs. Melody | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/17/90 | 913 - Tim vs. Marci | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/18/90 | 914 - Carlos vs. Marci | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/19/90 | 915 - Carlos vs. Jean | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/20/90 | 916 - Annie vs. Jack | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/21/90 | 917 - Jim vs. Carolyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/24/90 | 918 - Jim vs. Carolyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/26/90 | 919 - Jim vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/27/90 | 920 - Gregg vs. Evelyn | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/28/90 | 921 - Gregg vs. Beth Ann | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 12/31/90 | 922 - Bruce vs. Beth Ann | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/2/91 | 923 - Bruce vs. Andrea | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/3/91 | 924 - Michael vs. Andrea | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/4/91 | 925 - Jeff vs. Rita | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/7/91 | 926 - Jeff vs. Adel | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/8/91 | 927 - Jeff vs. Jeanne | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/9/91 | 928 - Tracey vs. Jeanne | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/10/91 | 929 - Tracey vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/11/91 | 930 - Mai vs. Scott | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/14/91 | 931 - Mai vs. Victor | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/15/91 | 932 - Carolyn vs. Victor | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/16/91 | 933 - Starlene vs. Tim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/21/91 | 934 - Deborah vs. Tim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/22/91 | 935 - Deborah vs. Tim | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/23/91 | 936 - Mary vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/24/91 | 937 - Dinah vs. John | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/25/91 | 938 - Dinah vs. Colin | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/28/91 | 939 - Dinah vs. Jeff | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/29/91 | 940 - Paula vs. Jeff | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/30/91 | 941 - Meryl vs. Jeff | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 1/31/91 | 942 - Penny vs. Michelle | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/1/91 | 943 - Paul vs. Julie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/4/91 | 944 - Paul vs. Julie | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/5/91 | 945 - Bill vs. Wanda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/6/91 | 946 - John vs. Wanda | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/7/91 | 947 - John vs. Tina | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/8/91 | 948 - John vs. Nadine | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/18/91 | 949 - Ken vs. Mark | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 2/91 | Kent vs. Stephanie | B/OB | |
| Classic Concentration | Alex Trebek | 1991 | Ben vs. Susan - Ben loses the bonus round on purpose | A-/OB | |
| Classic Concentration | Alex Trebek | 1991 | Dina vs. David | B/OB | |
| Classic Concentration | Alex Trebek | 1991 | Dina vs. Paul | B/OB | |
| Classic Concentration | Alex Trebek | 1991 | Lynn vs. Joe | B/OB | |
| Classic Concentration | Alex Trebek | 1991 | Kevin vs. Carol | B/OB | |
| Classic Concentration | Alex Trebek | 1991 | Joy vs. Dave - 1000th show | A-/OB | |
| Classic Concentration | Alex Trebek | 1991 | Lori vs. Christina | B/OC | |
| Classic Concentration | Alex Trebek | 1991 | Polly vs. Jamie | A-/OB | |
| Classic Concentration | Alex Trebek | 1991 | Stephanie vs. Jim | A-/OB | |
| Classic Concentration | Alex Trebek | 1991 | 1036 - Terri vs. Antoinette | A/SM | |
| Classic Concentration | Alex Trebek | 1991 | 1037 - Terri vs. Antoinette | A/SM | |
| Classic Concentration | Alex Trebek | 1991 | 1043 - Brad vs. Steven | A/SM | |
| Classic Concentration | Alex Trebek | 1991 | 1044 - Brad vs. Steven | A/SM | |
| Classic Concentration | Alex Trebek | 1991 | 1045 - Brad vs. Nina | A/SM | |
| Classic Concentration | Alex Trebek | 1991 | 1047 - Mark vs. Evelyn | A/SM | |
| Classic Concentration | Alex Trebek | 9/19/91 | 1089 - Rob vs. Amy | 1stGen/Buzzr | |
| Classic Concentration | Alex Trebek | 9/20/91 | 1090 - Bob vs. Amy - Last episode | B+/OB, C/OC, 1stGen/Buzzr |
