Head to Head
| 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 |
| MLB | 2019/06/18 02:10 | KC Royals v SEA Mariners | W | 6-4 |
| MLB | 2019/04/11 17:15 | SEA Mariners v KC Royals | L | 7-6 |
| MLB | 2019/04/11 00:15 | SEA Mariners v KC Royals | L | 6-5 |
| MLB | 2019/04/10 00:15 | SEA Mariners v KC Royals | L | 6-3 |
| MLB | 2019/04/09 00:15 | SEA Mariners v KC Royals | L | 13-5 |
Home History
| MLB - Spring Training | 2021/03/08 20:05 | OAK Athletics v KC Royals | W | 3-10 |
| MLB Exhibition | 2021/03/07 20:10 | KC Royals v SD Padres | W | 4-3 |
| MLB - Spring Training | 2021/03/06 20:05 | KC Royals v SF Giants | W | 8-6 |
| MLB Exhibition | 2021/03/05 20:05 | LA Dodgers v KC Royals | L | 7-5 |
| MLB - Spring Training | 2021/03/05 01:05 | KC Royals v CIN Reds | W | 5-3 |
| MLB - Spring Training | 2021/03/03 20:05 | CHI White Sox v KC Royals | W | 5-6 |
| MLB Exhibition | 2021/03/02 20:05 | KC Royals v CHI Cubs | L | 2-3 |
| MLB Exhibition | 2021/03/01 20:05 | KC Royals v CLE Guardians | W | 8-6 |
Away History
| MLB - Spring Training | 2021/03/08 20:05 | SEA Mariners v CLE Guardians | L | 0-10 |
| MLB Exhibition | 2021/03/07 20:10 | SEA Mariners v LA Angels | L | 2-6 |
| MLB - Spring Training | 2021/03/06 20:10 | OAK Athletics v SEA Mariners | D | 1-1 |
| MLB Exhibition | 2021/03/05 20:05 | SEA Mariners v CHI White Sox | D | 2-2 |
| MLB - Spring Training | 2021/03/04 20:10 | COL Rockies v SEA Mariners | D | 9-9 |
| MLB Exhibition | 2021/03/03 20:05 | SEA Mariners v CHI Cubs | D | 8-8 |
| MLB - Spring Training | 2021/03/02 20:10 | CLE Guardians v SEA Mariners | L | 6-1 |
| MLB - Spring Training | 2021/02/28 20:10 | SD Padres v SEA Mariners | W | 4-5 |