Head to Head
| MLB | 2021/08/28 20:10 | KC Royals v SEA Mariners | W | 4-2 |
| MLB | 2021/08/28 02:10 | KC Royals v SEA Mariners | W | 8-7 |
| MLB | 2021/08/27 02:10 | KC Royals v SEA Mariners | W | 6-4 |
| MLB Exhibition | 2021/03/17 01:05 | SEA Mariners v KC Royals | L | 13-0 |
| MLB - Spring Training | 2021/03/09 20:10 | KC Royals v SEA Mariners | L | 3-6 |
| MLB Exhibition | 2020/02/29 20:10 | KC Royals v SEA Mariners | W | 9-6 |
| MLB | 2019/06/19 22:40 | KC Royals v SEA Mariners | L | 2-8 |
| MLB | 2019/06/19 02:10 | KC Royals v SEA Mariners | W | 9-0 |
Home History
| MLB | 2021/08/28 20:10 | KC Royals v SEA Mariners | W | 4-2 |
| MLB | 2021/08/28 02:10 | KC Royals v SEA Mariners | W | 8-7 |
| MLB | 2021/08/27 02:10 | KC Royals v SEA Mariners | W | 6-4 |
| MLB | 2021/08/25 18:10 | KC Royals v HOU Astros | L | 5-6 |
| MLB | 2021/08/25 00:10 | KC Royals v HOU Astros | L | 0-4 |
| MLB | 2021/08/24 00:10 | KC Royals v HOU Astros | W | 7-1 |
| MLB | 2021/08/22 18:20 | KC Royals v CHI Cubs | W | 9-1 |
| MLB | 2021/08/21 18:20 | KC Royals v CHI Cubs | W | 4-2 |
Away History
| MLB | 2021/08/28 20:10 | KC Royals v SEA Mariners | L | 4-2 |
| MLB | 2021/08/28 02:10 | KC Royals v SEA Mariners | L | 8-7 |
| MLB | 2021/08/27 02:10 | KC Royals v SEA Mariners | L | 6-4 |
| MLB | 2021/08/24 19:37 | SEA Mariners v OAK Athletics | W | 5-1 |
| MLB | 2021/08/24 01:40 | SEA Mariners v OAK Athletics | W | 5-3 |
| MLB | 2021/08/22 18:10 | SEA Mariners v HOU Astros | W | 6-3 |
| MLB | 2021/08/21 20:10 | SEA Mariners v HOU Astros | L | 1-15 |
| MLB | 2021/08/21 00:10 | SEA Mariners v HOU Astros | L | 3-12 |