Head to Head
| Japan NPB | 2019/09/19 09:00 | Nippon Ham Fighters v Seibu Lions | L | 0-2 |
| Japan NPB | 2019/08/29 04:00 | Seibu Lions v Nippon Ham Fighters | L | 5-2 |
| Japan NPB | 2019/08/28 04:00 | Seibu Lions v Nippon Ham Fighters | L | 10-8 |
| Japan NPB | 2019/08/27 04:00 | Seibu Lions v Nippon Ham Fighters | L | 8-2 |
| Japan NPB | 2019/08/22 09:00 | Nippon Ham Fighters v Seibu Lions | W | 5-3 |
| Japan NPB | 2019/08/21 09:00 | Nippon Ham Fighters v Seibu Lions | L | 6-11 |
| Japan NPB | 2019/08/20 09:00 | Nippon Ham Fighters v Seibu Lions | L | 2-4 |
| Japan NPB | 2019/07/28 08:00 | Nippon Ham Fighters v Seibu Lions | L | 7-8 |
Home History
| Japan NPB Exhibition | 2020/06/14 05:00 | Nippon Ham Fighters v Yomiuri Giants | W | 4-2 |
| Japan NPB Exhibition | 2020/06/13 05:00 | Yomiuri Giants v Nippon Ham Fighters | D | 8-8 |
| Japan NPB Exhibition | 2020/06/12 05:00 | Nippon Ham Fighters v Yomiuri Giants | W | 6-2 |
| Japan NPB Exhibition | 2020/06/10 04:00 | Yakult Swallows v Nippon Ham Fighters | W | 3-6 |
| Japan NPB Exhibition | 2020/06/09 04:00 | Yakult Swallows v Nippon Ham Fighters | L | 5-3 |
| Japan NPB Exhibition | 2020/06/07 04:00 | Nippon Ham Fighters v Yokohama Bay Stars | L | 0-4 |
| Japan NPB Exhibition | 2020/06/06 04:00 | Yokohama Bay Stars v Nippon Ham Fighters | W | 4-5 |
| Japan NPB Exhibition | 2020/06/05 04:00 | Nippon Ham Fighters v Yokohama Bay Stars | D | 4-4 |
Away History
| Japan NPB Exhibition | 2020/06/14 04:00 | Lotte Marines v Seibu Lions | W | 3-4 |
| Japan NPB Exhibition | 2020/06/13 05:00 | Lotte Marines v Seibu Lions | W | 2-3 |
| Japan NPB Exhibition | 2020/06/12 09:00 | Lotte Marines v Seibu Lions | W | 6-9 |
| Japan NPB Exhibition | 2020/06/11 04:00 | Seibu Lions v Rakuten Eagles | W | 1-0 |
| Japan NPB Exhibition | 2020/06/10 04:00 | Rakuten Eagles v Seibu Lions | D | 1-1 |
| Japan NPB Exhibition | 2020/06/09 04:00 | Seibu Lions v Rakuten Eagles | W | 7-5 |
| Japan NPB Exhibition | 2020/06/07 04:00 | Chunichi Dragons v Seibu Lions | W | 1-11 |
| Japan NPB Exhibition | 2020/06/06 04:00 | Chunichi Dragons v Seibu Lions | L | 7-5 |