1990 Toronto Blue Jays season Game log September

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| September 22 | Indians | 5 - 2 | Stottlemyre (13-16) | 49883 | 82-70 |
| September 23 | Indians | 5 - 4 (10) | Ward (1-3) | 49901 | 83-70 |
| September 24 | @ Brewers | 9 - 5 | Navarro (7-7) | 8769 | 84-70 |
| September 25 | @ Brewers | 8 - 4 | Black (12-11) | 8576 | 84-71 |
| September 26 | @ Brewers | 6 - 0 | Wells (11-5) | 8804 | 84-72 |
| September 28 | @ Red Sox | 7 - 6 | Henke (2-3) | 35735 | 84-73 |
| September 29 | @ Red Sox | 7 - 5 | Stottlemyre (13-17) | 35444 | 84-74 |
| September 30 | @ Red Sox | 10 - 5 | Hesketh (0-4) | 34400 | 85-74 |