Head to Head
| Japan NPB | 2021/07/06 09:00 | Seibu Lions v Nippon Ham Fighters | L | 3-4 |
| Japan NPB | 2021/05/23 05:00 | Nippon Ham Fighters v Seibu Lions | L | 10-3 |
| Japan NPB | 2021/05/22 05:00 | Nippon Ham Fighters v Seibu Lions | W | 1-8 |
| Japan NPB | 2021/05/21 08:45 | Nippon Ham Fighters v Seibu Lions | W | 1-7 |
| Japan NPB | 2021/05/01 05:00 | Seibu Lions v Nippon Ham Fighters | L | 4-5 |
| Japan NPB | 2021/04/30 09:00 | Seibu Lions v Nippon Ham Fighters | W | 5-1 |
| Japan NPB | 2021/04/14 08:45 | Nippon Ham Fighters v Seibu Lions | W | 1-2 |
| Japan NPB | 2021/04/13 08:45 | Nippon Ham Fighters v Seibu Lions | L | 3-2 |
Home History
| Japan NPB | 2021/07/06 09:00 | Seibu Lions v Nippon Ham Fighters | L | 3-4 |
| Japan NPB | 2021/07/04 04:00 | Orix Buffaloes v Seibu Lions | L | 3-2 |
| Japan NPB | 2021/07/03 08:45 | Orix Buffaloes v Seibu Lions | L | 8-0 |
| Japan NPB | 2021/07/02 08:45 | Orix Buffaloes v Seibu Lions | L | 5-3 |
| Japan NPB | 2021/07/01 09:00 | Seibu Lions v Softbank Hawks | W | 1-0 |
| Japan NPB | 2021/06/30 09:00 | Seibu Lions v Softbank Hawks | L | 1-9 |
| Japan NPB | 2021/06/28 09:00 | Seibu Lions v Softbank Hawks | W | 5-2 |
| Japan NPB | 2021/06/27 04:00 | Seibu Lions v Orix Buffaloes | L | 0-10 |
Away History
| Japan NPB | 2021/07/06 09:00 | Seibu Lions v Nippon Ham Fighters | W | 3-4 |
| Japan NPB | 2021/07/04 08:45 | Softbank Hawks v Nippon Ham Fighters | L | 5-0 |
| Japan NPB | 2021/07/03 08:45 | Softbank Hawks v Nippon Ham Fighters | L | 7-1 |
| Japan NPB | 2021/07/01 09:00 | Nippon Ham Fighters v Rakuten Eagles | W | 2-1 |
| Japan NPB | 2021/06/30 09:00 | Nippon Ham Fighters v Rakuten Eagles | W | 3-0 |
| Japan NPB | 2021/06/29 09:00 | Nippon Ham Fighters v Rakuten Eagles | D | 5-5 |
| Japan NPB | 2021/06/27 05:00 | Lotte Marines v Nippon Ham Fighters | L | 8-3 |
| Japan NPB | 2021/06/26 09:00 | Lotte Marines v Nippon Ham Fighters | L | 3-1 |