Head to Head
| Japan NPB | 2019/04/19 09:00 | Softbank Hawks v Seibu Lions | W | 2-0 |
| Japan NPB | 2019/03/31 04:00 | Seibu Lions v Softbank Hawks | W | 1-3 |
| Japan NPB | 2019/03/30 04:00 | Seibu Lions v Softbank Hawks | W | 5-6 |
| Japan NPB | 2019/03/29 09:30 | Seibu Lions v Softbank Hawks | W | 4-5 |
| Japan Pre-Season Friendlies | 2019/03/06 09:00 | Seibu Lions v Softbank Hawks | W | 2-5 |
| Japan Pre-Season Friendlies | 2019/03/05 09:00 | Seibu Lions v Softbank Hawks | L | 11-3 |
| Japan NPB | 2018/10/21 04:00 | Softbank Hawks v Seibu Lions | W | 6-5 |
| Japan NPB | 2018/10/20 05:00 | Softbank Hawks v Seibu Lions | W | 8-2 |
Home History
| Japan NPB | 2019/04/19 09:00 | Softbank Hawks v Seibu Lions | W | 2-0 |
| Japan NPB | 2019/04/18 09:15 | Softbank Hawks v Lotte Marines | L | 2-5 |
| Japan NPB | 2019/04/17 09:15 | Softbank Hawks v Lotte Marines | L | 0-1 |
| Japan NPB | 2019/04/16 09:15 | Softbank Hawks v Lotte Marines | L | 0-6 |
| Japan NPB | 2019/04/14 04:00 | Softbank Hawks v Rakuten Eagles | W | 6-1 |
| Japan NPB | 2019/04/13 05:00 | Softbank Hawks v Rakuten Eagles | W | 1-0 |
| Japan NPB | 2019/04/12 09:00 | Softbank Hawks v Rakuten Eagles | L | 2-4 |
| Japan NPB | 2019/04/11 09:00 | Nippon Ham Fighters v Softbank Hawks | W | 2-5 |
Away History
| Japan NPB | 2019/04/19 09:00 | Softbank Hawks v Seibu Lions | L | 2-0 |
| Japan NPB | 2019/04/17 09:00 | Seibu Lions v Rakuten Eagles | L | 4-7 |
| Japan NPB | 2019/04/16 09:00 | Seibu Lions v Rakuten Eagles | L | 4-5 |
| Japan NPB | 2019/04/14 04:00 | Orix Buffaloes v Seibu Lions | W | 3-11 |
| Japan NPB | 2019/04/13 05:00 | Orix Buffaloes v Seibu Lions | L | 10-3 |
| Japan NPB | 2019/04/12 09:00 | Orix Buffaloes v Seibu Lions | W | 0-1 |
| Japan NPB | 2019/04/10 09:00 | Rakuten Eagles v Seibu Lions | L | 7-5 |
| Japan NPB | 2019/04/09 09:00 | Rakuten Eagles v Seibu Lions | L | 7-6 |