Head to Head
| Japan NPB | 2021/06/10 08:45 | Yokohama Bay Stars v Seibu Lions | L | 3-5 |
| Japan NPB | 2021/06/09 08:45 | Yokohama Bay Stars v Seibu Lions | D | 8-8 |
| Japan NPB | 2021/06/08 08:45 | Yokohama Bay Stars v Seibu Lions | L | 3-8 |
| Japan NPB Exhibition | 2021/03/19 04:00 | Yokohama Bay Stars v Seibu Lions | W | 5-1 |
| Japan NPB | 2019/06/09 04:00 | Seibu Lions v Yokohama Bay Stars | W | 4-6 |
| Japan NPB | 2019/06/08 05:00 | Seibu Lions v Yokohama Bay Stars | W | 3-7 |
| Japan NPB | 2019/06/07 09:00 | Seibu Lions v Yokohama Bay Stars | L | 6-2 |
| Japan Pre-Season Friendlies | 2019/03/24 04:00 | Seibu Lions v Yokohama Bay Stars | W | 1-6 |
Home History
| Japan NPB | 2021/10/28 09:00 | Yokohama Bay Stars v Hiroshima Carp | L | 0-7 |
| Japan NPB | 2021/10/26 08:45 | Yakult Swallows v Yokohama Bay Stars | L | 5-1 |
| Japan NPB | 2021/10/23 05:00 | Chunichi Dragons v Yokohama Bay Stars | W | 0-5 |
| Japan NPB | 2021/10/22 08:45 | Chunichi Dragons v Yokohama Bay Stars | W | 2-4 |
| Japan NPB | 2021/10/20 08:45 | Yomiuri Giants v Yokohama Bay Stars | L | 3-2 |
| Japan NPB | 2021/10/19 08:45 | Yomiuri Giants v Yokohama Bay Stars | D | 4-4 |
| Japan NPB | 2021/10/17 05:00 | Yakult Swallows v Yokohama Bay Stars | L | 7-3 |
| Japan NPB | 2021/10/14 09:00 | Yokohama Bay Stars v Hiroshima Carp | L | 3-5 |
Away History
| Japan NPB | 2021/10/26 09:00 | Seibu Lions v Nippon Ham Fighters | L | 0-1 |
| Japan NPB | 2021/10/21 09:00 | Seibu Lions v Orix Buffaloes | L | 2-3 |
| Japan NPB | 2021/10/20 08:45 | Nippon Ham Fighters v Seibu Lions | W | 5-7 |
| Japan NPB | 2021/10/19 08:45 | Nippon Ham Fighters v Seibu Lions | L | 6-2 |
| Japan NPB | 2021/10/18 08:45 | Lotte Marines v Seibu Lions | L | 2-1 |
| Japan NPB | 2021/10/17 04:00 | Seibu Lions v Rakuten Eagles | W | 6-5 |
| Japan NPB | 2021/10/16 05:30 | Seibu Lions v Rakuten Eagles | L | 0-3 |
| Japan NPB | 2021/10/15 09:00 | Seibu Lions v Rakuten Eagles | W | 5-1 |