1990 Toronto Blue Jays season Game log September

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| September 11 | @ Royals | 8 - 4 | Stottlemyre (0-1) | 18493 | 76-66 |
| September 12 | @ Royals | 7 - 5 | Stottlemyre (13-15) | 20135 | 76-67 |
| September 13 | Orioles | 5 - 3 | Stieb (18-6) | 49875 | 76-68 |
| September 14 | Orioles | 8 - 7 | Olson (5-5) | 49893 | 77-68 |
| September 15 | Orioles | 4 - 3 | Schilling (1-2) | 49888 | 78-68 |
| September 16 | Orioles | 6 - 5 | Price (3-4) | 49886 | 79-68 |
| September 17 | Yankees | 6 - 4 | Plunk (5-3) | 49902 | 80-68 |
| September 18 | Yankees | 3 - 2 | Guetterman (10-7) | 49887 | 81-68 |
| September 19 | Yankees | 7 - 6 | Leary (9-19) | 49890 | 82-68 |
| September 21 | Indians | 2 - 1 (13) | Wills (6-4) | 49894 | 82-69 |