Head to Head
| Japão - NPB | 2021/05/08 04:00 | Seibu Lions v Softbank Hawks | W | 2-0 |
| Japão - NPB | 2021/05/07 09:00 | Seibu Lions v Softbank Hawks | D | 2-2 |
| Japão - NPB | 2021/04/18 04:00 | Softbank Hawks v Seibu Lions | D | 4-4 |
| Japão - NPB | 2021/04/17 08:45 | Softbank Hawks v Seibu Lions | L | 7-1 |
| Japão - NPB | 2021/04/16 08:45 | Softbank Hawks v Seibu Lions | W | 1-2 |
| Japão - NPB | 2021/04/04 04:00 | Seibu Lions v Softbank Hawks | W | 4-2 |
| Japão - NPB | 2021/04/03 05:00 | Seibu Lions v Softbank Hawks | W | 7-4 |
| Japão - NPB | 2021/04/02 09:00 | Seibu Lions v Softbank Hawks | W | 6-2 |
Home History
| Japão - NPB | 2021/05/08 04:00 | Seibu Lions v Softbank Hawks | W | 2-0 |
| Japão - NPB | 2021/05/07 09:00 | Seibu Lions v Softbank Hawks | D | 2-2 |
| Japão - NPB | 2021/05/05 04:00 | Orix Buffaloes v Seibu Lions | W | 2-6 |
| Japão - NPB | 2021/05/04 05:00 | Orix Buffaloes v Seibu Lions | D | 6-6 |
| Japão - NPB | 2021/05/03 08:45 | Orix Buffaloes v Seibu Lions | L | 6-3 |
| Japão - NPB | 2021/05/01 05:00 | Seibu Lions v Nippon Ham Fighters | L | 4-5 |
| Japão - NPB | 2021/04/30 09:00 | Seibu Lions v Nippon Ham Fighters | W | 5-1 |
| Japão - NPB | 2021/04/29 05:00 | Lotte Marines v Seibu Lions | L | 5-2 |
Away History
| Japão - NPB | 2021/05/08 04:00 | Seibu Lions v Softbank Hawks | L | 2-0 |
| Japão - NPB | 2021/05/07 09:00 | Seibu Lions v Softbank Hawks | D | 2-2 |
| Japão - NPB | 2021/05/05 04:00 | Rakuten Eagles v Softbank Hawks | D | 5-5 |
| Japão - NPB | 2021/05/04 05:00 | Rakuten Eagles v Softbank Hawks | W | 4-6 |
| Japão - NPB | 2021/05/03 09:00 | Rakuten Eagles v Softbank Hawks | L | 7-4 |
| Japão - NPB | 2021/05/02 04:00 | Softbank Hawks v Orix Buffaloes | L | 4-5 |
| Japão - NPB | 2021/05/01 05:00 | Softbank Hawks v Orix Buffaloes | W | 13-0 |
| Japão - NPB | 2021/04/30 09:00 | Softbank Hawks v Orix Buffaloes | L | 4-5 |