2003 Toronto Blue Jays season Game log September

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| September 11 | @ Devil Rays | 3 - 1 | González (6-9) | 9345 | 74-72 |
| September 12 | Orioles | 4 - 2 | DuBose (2-5) | 15274 | 75-72 |
| September 13 | Orioles | 6 - 1 | Hentgen (6-8) | 18309 | 76-72 |
| September 14 | Orioles | 5 - 3 | Lidle (12-13) | 18763 | 76-73 |
| September 16 | @ Tigers | 9 - 6 | Cornejo (6-16) | 9801 | 77-73 |
| September 17 | @ Tigers | 6 - 0 | Loux (0-1) | 11240 | 78-73 |
| September 18 | @ Tigers | 10 - 6 | Maroth (7-21) | 9951 | 79-73 |
| September 19 | @ Orioles | 5 - 2 | Carrasco (2-5) | 25857 | 80-73 |
| September 20 | @ Orioles | 2 - 1 | Lidle (12-14) | 32381 | 80-74 |
| September 21 | @ Orioles | 7 - 4 | Carrasco (2-6) | 27502 | 81-74 |