Head to Head
| Japan Pre-Season Friendlies | 2019/03/16 04:00 | Yokohama Bay Stars v Seibu Lions | W | 1-4 |
| Japan NPB | 2018/06/18 09:00 | Seibu Lions v Yokohama Bay Stars | L | 2-4 |
| Japan NPB | 2018/06/07 09:00 | Seibu Lions v Yokohama Bay Stars | W | 9-7 |
| Japan NPB | 2018/06/05 09:00 | Seibu Lions v Yokohama Bay Stars | W | 8-1 |
| Japan NPB | 2017/06/11 04:00 | Yokohama Bay Stars v Seibu Lions | W | 0-1 |
| Japan NPB | 2017/06/10 05:00 | Yokohama Bay Stars v Seibu Lions | W | 2-6 |
| Japan NPB | 2017/06/09 09:00 | Yokohama Bay Stars v Seibu Lions | L | 4-3 |
| Japan NPB | 2016/06/02 09:00 | Seibu Lions v Yokohama Bay Stars | W | 4-1 |
| Japan NPB | 2016/06/01 09:00 | Seibu Lions v Yokohama Bay Stars | W | 7-0 |
| Japan NPB | 2016/05/31 09:00 | Seibu Lions v Yokohama Bay Stars | L | 2-5 |
| Japan NPB | 2015/06/07 04:00 | Yokohama Bay Stars v Seibu Lions | W | 3-9 |
| Japan NPB | 2015/06/06 05:00 | Yokohama Bay Stars v Seibu Lions | W | 1-5 |
| Japan NPB | 2015/06/05 09:00 | Yokohama Bay Stars v Seibu Lions | D | 3-3 |
| Japan NPB | 2014/06/22 04:00 | Yokohama Bay Stars v Seibu Lions | L | 4-3 |
| Japan NPB | 2014/06/21 05:00 | Yokohama Bay Stars v Seibu Lions | L | 8-7 |
| Japan NPB | 2014/06/04 09:00 | Seibu Lions v Yokohama Bay Stars | W | 1-0 |
| Japan NPB | 2014/06/03 09:00 | Seibu Lions v Yokohama Bay Stars | L | 2-5 |
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