Head to Head
| Japan NPB | 2020/09/22 09:00 | Nippon Ham Fighters v Seibu Lions | W | 5-1 |
| Japan NPB | 2020/09/06 04:00 | Seibu Lions v Nippon Ham Fighters | L | 4-2 |
| Japan NPB | 2020/09/05 05:00 | Seibu Lions v Nippon Ham Fighters | W | 2-6 |
| Japan NPB | 2020/09/04 09:00 | Seibu Lions v Nippon Ham Fighters | L | 6-2 |
| Japan NPB | 2020/08/27 09:00 | Nippon Ham Fighters v Seibu Lions | L | 7-8 |
| Japan NPB | 2020/08/26 09:00 | Nippon Ham Fighters v Seibu Lions | W | 8-5 |
| Japan NPB | 2020/08/25 09:00 | Nippon Ham Fighters v Seibu Lions | W | 4-3 |
| Japan NPB | 2020/08/09 04:00 | Seibu Lions v Nippon Ham Fighters | W | 1-2 |
Home History
| Japan NPB | 2020/09/22 09:00 | Nippon Ham Fighters v Seibu Lions | W | 5-1 |
| Japan NPB | 2020/09/20 05:00 | Lotte Marines v Nippon Ham Fighters | L | 5-3 |
| Japan NPB | 2020/09/19 05:00 | Lotte Marines v Nippon Ham Fighters | W | 1-3 |
| Japan NPB | 2020/09/18 09:00 | Lotte Marines v Nippon Ham Fighters | W | 3-7 |
| Japan NPB | 2020/09/17 09:00 | Softbank Hawks v Nippon Ham Fighters | L | 2-1 |
| Japan NPB | 2020/09/16 09:00 | Softbank Hawks v Nippon Ham Fighters | L | 5-4 |
| Japan NPB | 2020/09/15 09:00 | Softbank Hawks v Nippon Ham Fighters | W | 2-3 |
| Japan NPB | 2020/09/14 08:00 | Nippon Ham Fighters v Rakuten Eagles | W | 2-1 |
Away History
| Japan NPB | 2020/09/22 09:00 | Nippon Ham Fighters v Seibu Lions | L | 5-1 |
| Japan NPB | 2020/09/20 04:00 | Seibu Lions v Orix Buffaloes | W | 5-4 |
| Japan NPB | 2020/09/19 09:00 | Seibu Lions v Orix Buffaloes | L | 3-6 |
| Japan NPB | 2020/09/18 09:00 | Seibu Lions v Orix Buffaloes | L | 2-8 |
| Japan NPB | 2020/09/17 09:00 | Lotte Marines v Seibu Lions | L | 8-1 |
| Japan NPB | 2020/09/16 09:00 | Lotte Marines v Seibu Lions | W | 1-3 |
| Japan NPB | 2020/09/15 09:00 | Lotte Marines v Seibu Lions | W | 3-4 |
| Japan NPB | 2020/09/13 04:00 | Seibu Lions v Softbank Hawks | W | 1-0 |