Head to Head
| MLB Spring Training | 2017/03/16 20:05 | KC Royals v SEA Mariners | W | 2-9 |
| MLB Spring Training | 2017/02/27 19:10 | KC Royals v SEA Mariners | L | 14-3 |
| MLB | 2016/07/10 18:15 | KC Royals v SEA Mariners | W | 5-8 |
| MLB | 2016/04/30 02:10 | SEA Mariners v KC Royals | W | 1-0 |
| MLB Exhibition | 2016/03/28 20:10 | SEA Mariners v KC Royals | W | 6-4 |
| MLB Exhibition | 2016/03/19 20:05 | KC Royals v SEA Mariners | L | 5-4 |
| MLB Exhibition | 2016/03/09 20:10 | SEA Mariners v KC Royals | W | 7-5 |
| MLB | 2015/09/25 00:10 | KC Royals v SEA Mariners | L | 10-4 |