1988 Toronto Blue Jays season Game log September

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| September 21 | Red Sox | 1 - 0 | Gardner (8-5) | 30344 | 79-74 |
| September 23 | @ Indians | 4 - 2 | Swindell (17-14) | 7995 | 80-74 |
| September 24 | @ Indians | 1 - 0 | Nichols (1-6) | 8157 | 81-74 |
| September 25 | @ Indians | 4 - 3 | Ward (9-3) | 7915 | 81-75 |
| September 26 | @ Red Sox | 11 - 1 | Gardner (8-6) | 33953 | 82-75 |
| September 27 | @ Red Sox | 15 - 9 | Smithson (9-6) | 34442 | 83-75 |
| September 28 | @ Red Sox | 1 - 0 | Hurst (18-6) | 34873 | 84-75 |
| September 30 | Orioles | 4 - 0 | Ballard (8-12) | 32374 | 85-75 |