Head to Head
| Japan - NPB | 2021/09/28 09:00 | Seibu Lions v Softbank Hawks | L | 2-5 |
| Japan - NPB | 2021/09/08 08:45 | Softbank Hawks v Seibu Lions | L | 9-0 |
| Japan - NPB | 2021/09/07 08:45 | Softbank Hawks v Seibu Lions | W | 5-6 |
| Japan - NPB | 2021/08/26 08:45 | Softbank Hawks v Seibu Lions | W | 0-3 |
| Japan - NPB | 2021/08/25 08:45 | Softbank Hawks v Seibu Lions | L | 6-1 |
| Japan - NPB | 2021/08/24 08:45 | Softbank Hawks v Seibu Lions | D | 4-4 |
| 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 |
Home History
| Japan - NPB | 2021/09/28 09:00 | Seibu Lions v Softbank Hawks | L | 2-5 |
| Japan - NPB | 2021/09/26 04:00 | Lotte Marines v Seibu Lions | L | 8-4 |
| Japan - NPB | 2021/09/25 05:00 | Lotte Marines v Seibu Lions | L | 3-1 |
| Japan - NPB | 2021/09/24 08:45 | Lotte Marines v Seibu Lions | W | 4-5 |
| Japan - NPB | 2021/09/23 05:00 | Rakuten Eagles v Seibu Lions | W | 3-4 |
| Japan - NPB | 2021/09/22 08:45 | Rakuten Eagles v Seibu Lions | L | 4-2 |
| Japan - NPB | 2021/09/20 04:00 | Seibu Lions v Orix Buffaloes | W | 6-4 |
| Japan - NPB | 2021/09/19 04:00 | Seibu Lions v Orix Buffaloes | L | 1-4 |
Away History
| Japan - NPB | 2021/09/28 09:00 | Seibu Lions v Softbank Hawks | W | 2-5 |
| Japan - NPB | 2021/09/26 04:00 | Nippon Ham Fighters v Softbank Hawks | W | 1-4 |
| Japan - NPB | 2021/09/25 05:00 | Nippon Ham Fighters v Softbank Hawks | W | 2-4 |
| Japan - NPB | 2021/09/24 09:00 | Nippon Ham Fighters v Softbank Hawks | L | 4-1 |
| Japan - NPB | 2021/09/23 05:00 | Softbank Hawks v Lotte Marines | W | 5-0 |
| Japan - NPB | 2021/09/22 08:45 | Softbank Hawks v Lotte Marines | W | 4-1 |
| Japan - NPB | 2021/09/20 04:00 | Softbank Hawks v Rakuten Eagles | W | 5-4 |
| Japan - NPB | 2021/09/19 04:00 | Softbank Hawks v Rakuten Eagles | L | 2-4 |