1999 Toronto Blue Jays season Game log September

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| September 1 | Twins | 4 - 0 | Milton (6-11) | 23145 | 71-64 |
| September 2 | Twins | 6 - 1 | Mays (5-7) | 22255 | 72-64 |
| September 3 | @ Royals | 5 - 4 | Morman (2-3) | 13857 | 73-64 |
| September 4 | @ Royals | 6 - 3 (9) | Suppan (8-9) | 15243 | 74-64 |
| September 5 | @ Royals | 6 - 3 | Escobar (11-10) | 15315 | 74-65 |
| September 7 | @ Mariners | 7 - 4 | Wells (13-10) | 39709 | 74-66 |
| September 8 | @ Mariners | 4 - 3 | Koch (0-3) | 36971 | 74-67 |
| September 10 | @ Tigers | 7 - 6 | Frascatore (7-1) | 33736 | 74-68 |
| September 11 | @ Tigers | 9 - 5 | Cordero (1-2) | 40269 | 75-68 |