Head to Head
| Japan NPB | 2020/09/12 09:00 | Seibu Lions v Softbank Hawks | L | 4-8 |
| Japan NPB | 2020/09/11 09:00 | Seibu Lions v Softbank Hawks | L | 2-4 |
| Japan NPB | 2020/08/01 05:00 | Seibu Lions v Softbank Hawks | L | 0-4 |
| Japan NPB | 2020/07/31 09:00 | Seibu Lions v Softbank Hawks | L | 4-5 |
| Japan NPB | 2020/07/30 09:00 | Seibu Lions v Softbank Hawks | W | 6-0 |
| Japan NPB | 2020/07/29 09:00 | Seibu Lions v Softbank Hawks | L | 2-4 |
| Japan NPB | 2020/07/28 09:00 | Seibu Lions v Softbank Hawks | L | 4-9 |
| Japan NPB | 2020/06/28 04:00 | Softbank Hawks v Seibu Lions | W | 3-4 |
Home History
| Japan NPB | 2020/09/12 09:00 | Seibu Lions v Softbank Hawks | L | 4-8 |
| Japan NPB | 2020/09/11 09:00 | Seibu Lions v Softbank Hawks | L | 2-4 |
| Japan NPB | 2020/09/10 09:00 | Orix Buffaloes v Seibu Lions | L | 12-4 |
| Japan NPB | 2020/09/09 09:00 | Orix Buffaloes v Seibu Lions | W | 5-13 |
| Japan NPB | 2020/09/08 09:00 | Orix Buffaloes v Seibu Lions | W | 0-2 |
| 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 |
Away History
| Japan NPB | 2020/09/12 09:00 | Seibu Lions v Softbank Hawks | W | 4-8 |
| Japan NPB | 2020/09/11 09:00 | Seibu Lions v Softbank Hawks | W | 2-4 |
| Japan NPB | 2020/09/10 09:00 | Softbank Hawks v Rakuten Eagles | W | 9-2 |
| Japan NPB | 2020/09/09 09:00 | Softbank Hawks v Rakuten Eagles | W | 8-1 |
| Japan NPB | 2020/09/08 09:00 | Softbank Hawks v Rakuten Eagles | W | 2-0 |
| Japan NPB | 2020/09/06 04:00 | Lotte Marines v Softbank Hawks | L | 4-2 |
| Japan NPB | 2020/09/05 05:00 | Lotte Marines v Softbank Hawks | L | 5-4 |
| Japan NPB | 2020/09/04 09:00 | Lotte Marines v Softbank Hawks | L | 4-3 |