Head to Head
| Japan NPB | 2015/08/01 09:00 | Seibu Lions v Softbank Hawks | L | 1-2 |
| Japan NPB | 2015/07/31 09:00 | Seibu Lions v Softbank Hawks | L | 2-4 |
| Japan NPB | 2015/07/02 09:00 | Softbank Hawks v Seibu Lions | L | 4-3 |
| Japan NPB | 2015/07/01 09:00 | Softbank Hawks v Seibu Lions | W | 3-10 |
| Japan NPB | 2015/06/29 09:00 | Softbank Hawks v Seibu Lions | L | 3-1 |
| Japan NPB | 2015/06/25 09:00 | Seibu Lions v Softbank Hawks | L | 6-9 |
| Japan NPB | 2015/06/24 09:00 | Seibu Lions v Softbank Hawks | W | 7-4 |
| Japan NPB | 2015/06/23 09:00 | Seibu Lions v Softbank Hawks | L | 2-3 |
Home History
| Japan NPB | 2015/08/01 09:00 | Seibu Lions v Softbank Hawks | L | 1-2 |
| Japan NPB | 2015/07/31 09:00 | Seibu Lions v Softbank Hawks | L | 2-4 |
| Japan NPB | 2015/07/30 09:15 | Lotte Marines v Seibu Lions | L | 2-0 |
| Japan NPB | 2015/07/29 09:15 | Lotte Marines v Seibu Lions | L | 8-1 |
| Japan NPB | 2015/07/28 09:15 | Lotte Marines v Seibu Lions | L | 2-1 |
| Japan NPB | 2015/07/26 09:00 | Seibu Lions v Nippon Ham Fighters | L | 3-8 |
| Japan NPB | 2015/07/25 09:00 | Seibu Lions v Nippon Ham Fighters | L | 4-6 |
| Japan NPB | 2015/07/24 09:00 | Seibu Lions v Nippon Ham Fighters | L | 6-13 |
Away History
| Japan NPB | 2015/08/01 09:00 | Seibu Lions v Softbank Hawks | W | 1-2 |
| Japan NPB | 2015/07/31 09:00 | Seibu Lions v Softbank Hawks | W | 2-4 |
| Japan NPB | 2015/07/29 09:00 | Rakuten Eagles v Softbank Hawks | W | 2-9 |
| Japan NPB | 2015/07/28 09:00 | Rakuten Eagles v Softbank Hawks | W | 1-5 |
| Japan NPB | 2015/07/26 04:00 | Softbank Hawks v Orix Buffaloes | L | 1-5 |
| Japan NPB | 2015/07/25 05:00 | Softbank Hawks v Orix Buffaloes | W | 2-0 |
| Japan NPB | 2015/07/24 09:00 | Softbank Hawks v Orix Buffaloes | W | 2-1 |
| Japan NPB | 2015/07/22 09:00 | Softbank Hawks v Lotte Marines | W | 4-1 |