Head to Head
| Japan NPB | 2021/09/15 08:45 | Nippon Ham Fighters v Seibu Lions | D | 3-3 |
| Japan NPB | 2021/09/14 08:45 | Nippon Ham Fighters v Seibu Lions | L | 1-3 |
| Japan NPB | 2021/08/29 08:00 | Nippon Ham Fighters v Seibu Lions | W | 6-0 |
| Japan NPB | 2021/08/28 08:00 | Nippon Ham Fighters v Seibu Lions | D | 8-8 |
| Japan NPB | 2021/08/27 08:45 | Nippon Ham Fighters v Seibu Lions | W | 7-2 |
| Japan NPB | 2021/07/07 09:00 | Seibu Lions v Nippon Ham Fighters | W | 1-2 |
| Japan NPB | 2021/07/06 09:00 | Seibu Lions v Nippon Ham Fighters | W | 3-4 |
| Japan NPB | 2021/05/23 05:00 | Nippon Ham Fighters v Seibu Lions | W | 10-3 |
Home History
| Japan NPB | 2021/09/15 08:45 | Nippon Ham Fighters v Seibu Lions | D | 3-3 |
| Japan NPB | 2021/09/14 08:45 | Nippon Ham Fighters v Seibu Lions | L | 1-3 |
| Japan NPB | 2021/09/12 05:00 | Softbank Hawks v Nippon Ham Fighters | W | 0-3 |
| Japan NPB | 2021/09/11 05:00 | Softbank Hawks v Nippon Ham Fighters | W | 5-17 |
| Japan NPB | 2021/09/10 09:00 | Softbank Hawks v Nippon Ham Fighters | D | 4-4 |
| Japan NPB | 2021/09/09 09:00 | Rakuten Eagles v Nippon Ham Fighters | L | 4-0 |
| Japan NPB | 2021/09/08 09:00 | Rakuten Eagles v Nippon Ham Fighters | L | 8-0 |
| Japan NPB | 2021/09/07 09:00 | Rakuten Eagles v Nippon Ham Fighters | W | 2-4 |
Away History
| Japan NPB | 2021/09/15 08:45 | Nippon Ham Fighters v Seibu Lions | D | 3-3 |
| Japan NPB | 2021/09/14 08:45 | Nippon Ham Fighters v Seibu Lions | W | 1-3 |
| Japan NPB | 2021/09/12 04:00 | Orix Buffaloes v Seibu Lions | W | 1-3 |
| Japan NPB | 2021/09/11 05:00 | Orix Buffaloes v Seibu Lions | W | 0-7 |
| Japan NPB | 2021/09/10 08:45 | Orix Buffaloes v Seibu Lions | L | 7-1 |
| Japan NPB | 2021/09/08 08:45 | Softbank Hawks v Seibu Lions | L | 9-0 |
| Japan NPB | 2021/09/07 08:45 | Softbank Hawks v Seibu Lions | W | 5-6 |
| Japan NPB | 2021/09/05 06:00 | Seibu Lions v Rakuten Eagles | L | 2-8 |