| 2018 American League |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Mtl | Was | Bal | Bos | NYY | Tor | Cle | Det | Min | ChW | LAA | Oak | Sea | Tex | KCR |
| Mtl | x | 10-4 | 6-6 | 8-6 | 7-5 | 3-5 | 4-4 | 3-5 | 5-3 | 5-3 | 3-5 | 3-5 | 3-5 | 6-2 | 4-4 |
| Was | 4-10 | x | 1-11 | 4-10 | 3-9 | 0-8 | 0-8 | 1-7 | 4-4 | 1-7 | 1-7 | 1-7 | 2-6 | 3-5 | 2-6 |
| Bal | 6-6 | 11-1 | x | 12-0 | 2-14 | 2-6 | 3-5 | 3-5 | 5-3 | 2-6 | 5-3 | 4-4 | 4-4 | 3-5 | 5-3 |
| Bos | 6-8 | 10-4 | 0-12 | x | 1-11 | 3-5 | 3-5 | 4-4 | 3-5 | 2-6 | 1-7 | 0-8 | 1-7 | 4-4 | 4-4 |
| NYY | 5-7 | 9-3 | 14-2 | 11-1 | x | 4-4 | 5-3 | 3-5 | 5-3 | 3-5 | 5-3 | 4-4 | 4-4 | 8-0 | 7-1 |
| | | | | | | | | | | | | | | | |
| Tor | 5-3 | 8-0 | 6-2 | 5-3 | 4-4 | x | 6-6 | 8-6 | 11-1 | 8-6 | 4-4 | 4-4 | 3-5 | 5-3 | 5-3 |
| Cle | 4-4 | 8-0 | 5-3 | 5-3 | 3-5 | 6-6 | x | 6-6 | 6-10 | 4-8 | 3-5 | 1-7 | 2-6 | 4-4 | 4-4 |
| Det | 5-3 | 7-1 | 5-3 | 4-4 | 5-3 | 6-8 | 6-6 | x | 7-5 | 6-8 | 4-4 | 6-2 | 3-5 | 4-4 | 6-2 |
| Min | 3-5 | 4-4 | 3-5 | 5-3 | 3-5 | 1-11 | 10-6 | 5-7 | x | 5-7 | 5-3 | 2-6 | 1-7 | 1-7 | 3-5 |
| ChW | 3-5 | 7-1 | 6-2 | 6-2 | 5-3 | 6-8 | 8-4 | 8-6 | 7-5 | x | 6-2 | 5-3 | 4-4 | 8-0 | 4-4 |
| | | | | | | | | | | | | | | | |
| LAA | 5-3 | 7-1 | 3-5 | 7-1 | 3-5 | 4-4 | 5-3 | 4-4 | 3-5 | 2-6 | x | 5-9 | 6-8 | 7-5 | 6-6 |
| Oak | 5-3 | 7-1 | 4-4 | 8-0 | 4-4 | 4-4 | 7-1 | 2-6 | 6-2 | 3-5 | 9-5 | x | 6-8 | 6-6 | 10-2 |
| Sea | 5-3 | 6-2 | 4-4 | 7-1 | 4-4 | 5-3 | 6-2 | 5-3 | 7-1 | 4-4 | 8-6 | 8-6 | x | 10-2 | 10-2 |
| Tex | 2-6 | 5-3 | 5-3 | 4-4 | 0-8 | 3-5 | 4-4 | 4-4 | 7-1 | 0-8 | 5-7 | 6-6 | 2-10 | x | 4-12 |
| KCR | 4-4 | 6-2 | 3-5 | 4-4 | 1-7 | 3-5 | 4-4 | 2-6 | 5-3 | 4-4 | 6-6 | 2-10 | 2-10 | 12-4 | x |
| | | | | | | | | | | | | | | | |