1999 Cleveland Indians season Game log September

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| September 1 | Angels | 8 - 1 | Washburn (0-3) | 43399 | 82-50 |
| September 2 | Angels | 6 - 5 | Sparks (5-11) | 43369 | 83-50 |
| September 3 | @ Orioles | 7 - 6 | Reyes (0-3) | 41521 | 84-50 |
| September 4 | @ Orioles | 3 - 1 | Colón (15-5) | 47095 | 84-51 |
| September 5 | @ Orioles | 15 - 7 | Ponson (11-11) | 44214 | 85-51 |
| September 6 | @ Orioles | 7 - 6 | Johns (4-3) | 40540 | 86-51 |
| September 7 | @ Rangers | 4 - 3 | Reed (3-2) | 26011 | 86-52 |
| September 8 | @ Rangers | 3 - 0 | Haney (0-2) | 29889 | 86-53 |
| September 10 | @ White Sox | 14 - 6 | Wells (2-1) | 19132 | 87-53 |