Head to Head
| 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 |
| Japan NPB | 2018/09/17 04:00 | Softbank Hawks v Seibu Lions | W | 1-8 |
| Japan NPB | 2018/09/16 04:00 | Seibu Lions v Softbank Hawks | W | 8-5 |
| Japan NPB | 2018/09/15 05:00 | Softbank Hawks v Seibu Lions | W | 5-11 |
| Japan NPB | 2018/08/26 04:00 | Seibu Lions v Softbank Hawks | L | 8-12 |
| Japan NPB | 2018/08/25 09:00 | Seibu Lions v Softbank Hawks | L | 1-5 |
| Japan NPB | 2018/08/02 09:00 | Softbank Hawks v Seibu Lions | W | 2-10 |
| Japan NPB | 2018/08/01 09:00 | Softbank Hawks v Seibu Lions | L | 14-6 |
| Japan NPB | 2018/07/31 09:00 | Softbank Hawks v Seibu Lions | W | 4-7 |
| Japan NPB | 2018/07/18 09:00 | Seibu Lions v Softbank Hawks | W | 12-5 |
| Japan NPB | 2018/07/17 09:00 | Seibu Lions v Softbank Hawks | L | 1-6 |
| Japan NPB | 2018/07/16 09:00 | Seibu Lions v Softbank Hawks | L | 4-16 |
| Japan NPB | 2018/05/24 09:00 | Seibu Lions v Softbank Hawks | W | 12-5 |
| Japan NPB | 2018/05/23 09:00 | Seibu Lions v Softbank Hawks | W | 2-1 |
| Japan NPB | 2018/05/22 09:00 | Seibu Lions v Softbank Hawks | L | 3-5 |
| Japan NPB | 2018/05/09 09:00 | Softbank Hawks v Seibu Lions | L | 3-0 |
| Japan NPB | 2018/05/08 09:00 | Softbank Hawks v Seibu Lions | L | 5-0 |
| Japan NPB | 2018/04/26 09:00 | Seibu Lions v Softbank Hawks | L | 1-4 |
| Japan NPB | 2018/04/25 09:00 | Seibu Lions v Softbank Hawks | W | 12-6 |
| Japan NPB | 2018/04/04 05:00 | Softbank Hawks v Seibu Lions | W | 1-2 |