Head to Head
| Japan NPB | 2019/08/18 05:00 | Seibu Lions v Softbank Hawks | L | 4-5 |
| Japan NPB | 2019/08/17 09:00 | Seibu Lions v Softbank Hawks | W | 13-8 |
| Japan NPB | 2019/08/01 09:00 | Softbank Hawks v Seibu Lions | L | 11-10 |
| Japan NPB | 2019/07/31 09:00 | Softbank Hawks v Seibu Lions | W | 0-2 |
| Japan NPB | 2019/07/30 09:00 | Softbank Hawks v Seibu Lions | W | 2-5 |
| Japan NPB | 2019/07/10 09:00 | Seibu Lions v Softbank Hawks | W | 7-3 |
| Japan NPB | 2019/07/09 09:00 | Seibu Lions v Softbank Hawks | L | 2-3 |
| Japan NPB | 2019/07/08 09:00 | Seibu Lions v Softbank Hawks | L | 7-8 |
| Japan NPB | 2019/05/22 09:30 | Softbank Hawks v Seibu Lions | W | 3-7 |
| Japan NPB | 2019/05/21 09:30 | Softbank Hawks v Seibu Lions | W | 6-7 |
| Japan NPB | 2019/05/16 09:00 | Seibu Lions v Softbank Hawks | L | 1-5 |
| Japan NPB | 2019/05/15 09:00 | Seibu Lions v Softbank Hawks | W | 5-4 |
| Japan NPB | 2019/05/14 09:00 | Seibu Lions v Softbank Hawks | W | 11-7 |
| Japan NPB | 2019/04/21 04:00 | Softbank Hawks v Seibu Lions | L | 16-5 |
| Japan NPB | 2019/04/20 05:00 | Softbank Hawks v Seibu Lions | W | 4-6 |
| Japan NPB | 2019/04/19 09:00 | Softbank Hawks v Seibu Lions | L | 2-0 |
| Japan NPB | 2019/03/31 04:00 | Seibu Lions v Softbank Hawks | L | 1-3 |
| Japan NPB | 2019/03/30 04:00 | Seibu Lions v Softbank Hawks | L | 5-6 |
| Japan NPB | 2019/03/29 09:30 | Seibu Lions v Softbank Hawks | L | 4-5 |
| Japan Pre-Season Friendlies | 2019/03/06 09:00 | Seibu Lions v Softbank Hawks | L | 2-5 |
| Japan Pre-Season Friendlies | 2019/03/05 09:00 | Seibu Lions v Softbank Hawks | W | 11-3 |
| Japan NPB | 2018/10/21 04:00 | Softbank Hawks v Seibu Lions | L | 6-5 |
| Japan NPB | 2018/10/20 05:00 | Softbank Hawks v Seibu Lions | L | 8-2 |
| Japan NPB | 2018/10/19 09:00 | Softbank Hawks v Seibu Lions | L | 15-4 |
| Japan NPB | 2018/10/18 09:00 | Softbank Hawks v Seibu Lions | W | 5-13 |
| Japan NPB | 2018/10/17 09:00 | Softbank Hawks v Seibu Lions | L | 10-4 |
| Japan NPB | 2018/10/06 09:00 | Seibu Lions v Softbank Hawks | L | 3-8 |
| Japan NPB | 2018/09/29 04:00 | Softbank Hawks v Seibu Lions | L | 3-1 |
| Japan NPB | 2018/09/28 09:00 | Softbank Hawks v Seibu Lions | W | 3-5 |
| Japan NPB | 2018/09/27 09:00 | Softbank Hawks v Seibu Lions | W | 5-7 |