Head to Head
| Japan NPB | 2020/10/14 09:00 | Seibu Lions v Nippon Ham Fighters | L | 2-7 |
| Japan NPB | 2020/10/13 09:00 | Seibu Lions v Nippon Ham Fighters | W | 7-0 |
| Japan NPB | 2020/09/24 09:00 | Nippon Ham Fighters v Seibu Lions | L | 12-2 |
| Japan NPB | 2020/09/23 09:00 | Nippon Ham Fighters v Seibu Lions | W | 5-6 |
| Japan NPB | 2020/09/22 09:00 | Nippon Ham Fighters v Seibu Lions | L | 5-1 |
| Japan NPB | 2020/09/06 04:00 | Seibu Lions v Nippon Ham Fighters | W | 4-2 |
| Japan NPB | 2020/09/05 05:00 | Seibu Lions v Nippon Ham Fighters | L | 2-6 |
| Japan NPB | 2020/09/04 09:00 | Seibu Lions v Nippon Ham Fighters | W | 6-2 |
Home History
| Japan NPB | 2020/10/14 09:00 | Seibu Lions v Nippon Ham Fighters | L | 2-7 |
| Japan NPB | 2020/10/13 09:00 | Seibu Lions v Nippon Ham Fighters | W | 7-0 |
| Japan NPB | 2020/10/11 04:00 | Seibu Lions v Rakuten Eagles | L | 2-8 |
| Japan NPB | 2020/10/09 09:00 | Seibu Lions v Rakuten Eagles | W | 5-2 |
| Japan NPB | 2020/10/08 09:00 | Softbank Hawks v Seibu Lions | D | 4-4 |
| Japan NPB | 2020/10/07 09:00 | Softbank Hawks v Seibu Lions | W | 3-4 |
| Japan NPB | 2020/10/06 09:00 | Softbank Hawks v Seibu Lions | W | 1-3 |
| Japan NPB | 2020/10/04 04:00 | Seibu Lions v Lotte Marines | L | 1-8 |
Away History
| Japan NPB | 2020/10/14 09:00 | Seibu Lions v Nippon Ham Fighters | W | 2-7 |
| Japan NPB | 2020/10/13 09:00 | Seibu Lions v Nippon Ham Fighters | L | 7-0 |
| Japan NPB | 2020/10/11 05:00 | Orix Buffaloes v Nippon Ham Fighters | L | 7-5 |
| Japan NPB | 2020/10/10 05:00 | Orix Buffaloes v Nippon Ham Fighters | W | 0-4 |
| Japan NPB | 2020/10/09 09:00 | Orix Buffaloes v Nippon Ham Fighters | L | 6-4 |
| Japan NPB | 2020/10/08 09:00 | Rakuten Eagles v Nippon Ham Fighters | L | 4-1 |
| Japan NPB | 2020/10/07 09:00 | Rakuten Eagles v Nippon Ham Fighters | D | 2-2 |
| Japan NPB | 2020/10/06 09:00 | Rakuten Eagles v Nippon Ham Fighters | W | 3-5 |