Head to Head
| 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 |
| Japan NPB | 2021/03/31 09:00 | Seibu Lions v Nippon Ham Fighters | D | 1-1 |
| Japan NPB | 2021/03/30 09:30 | Seibu Lions v Nippon Ham Fighters | W | 11-4 |
| Japan NPB Exhibition | 2021/03/04 09:00 | Seibu Lions v Nippon Ham Fighters | W | 6-1 |
| Japan NPB Exhibition | 2021/03/03 09:00 | Seibu Lions v Nippon Ham Fighters | L | 0-7 |
| Japan NPB | 2020/11/04 09:00 | Nippon Ham Fighters v Seibu Lions | W | 3-10 |
Home History
| Japan NPB | 2021/04/30 09:00 | Seibu Lions v Nippon Ham Fighters | W | 5-1 |
| Japan NPB | 2021/04/29 05:00 | Lotte Marines v Seibu Lions | L | 5-2 |
| Japan NPB | 2021/04/28 08:45 | Lotte Marines v Seibu Lions | W | 2-3 |
| Japan NPB | 2021/04/27 08:45 | Lotte Marines v Seibu Lions | W | 1-3 |
| Japan NPB | 2021/04/25 04:00 | Seibu Lions v Rakuten Eagles | L | 4-8 |
| Japan NPB | 2021/04/24 05:00 | Seibu Lions v Rakuten Eagles | L | 1-2 |
| Japan NPB | 2021/04/23 09:00 | Seibu Lions v Rakuten Eagles | D | 2-2 |
| Japan NPB | 2021/04/22 09:00 | Seibu Lions v Orix Buffaloes | L | 6-7 |
Away History
| Japan NPB | 2021/04/30 09:00 | Seibu Lions v Nippon Ham Fighters | L | 5-1 |
| Japan NPB | 2021/04/29 04:00 | Nippon Ham Fighters v Softbank Hawks | L | 1-2 |
| Japan NPB | 2021/04/28 09:00 | Nippon Ham Fighters v Softbank Hawks | W | 4-3 |
| Japan NPB | 2021/04/27 09:00 | Nippon Ham Fighters v Softbank Hawks | W | 7-2 |
| Japan NPB | 2021/04/25 05:00 | Orix Buffaloes v Nippon Ham Fighters | D | 4-4 |
| Japan NPB | 2021/04/24 05:00 | Orix Buffaloes v Nippon Ham Fighters | W | 3-5 |
| Japan NPB | 2021/04/23 09:00 | Orix Buffaloes v Nippon Ham Fighters | L | 6-1 |
| Japan NPB | 2021/04/22 08:45 | Nippon Ham Fighters v Lotte Marines | W | 3-1 |