Head to Head
| Japan NPB | 2020/10/29 09:00 | Rakuten Eagles v Seibu Lions | L | 13-5 |
| Japan NPB | 2020/10/28 09:00 | Rakuten Eagles v Seibu Lions | W | 3-4 |
| Japan NPB | 2020/10/27 09:00 | Rakuten Eagles v Seibu Lions | W | 3-4 |
| Japan NPB | 2020/10/11 04:00 | Seibu Lions v Rakuten Eagles | L | 2-8 |
| Japan NPB | 2020/10/09 09:00 | Seibu Lions v Rakuten Eagles | W | 5-2 |
| Japan NPB | 2020/09/27 04:00 | Rakuten Eagles v Seibu Lions | W | 2-6 |
| Japan NPB | 2020/09/26 05:00 | Rakuten Eagles v Seibu Lions | W | 1-5 |
| Japan NPB | 2020/09/25 09:00 | Rakuten Eagles v Seibu Lions | W | 4-5 |
| Japan NPB | 2020/08/30 08:00 | Seibu Lions v Rakuten Eagles | W | 3-2 |
| Japan NPB | 2020/08/29 09:00 | Seibu Lions v Rakuten Eagles | W | 6-3 |
| Japan NPB | 2020/08/28 09:00 | Seibu Lions v Rakuten Eagles | L | 1-2 |
| Japan NPB | 2020/08/16 09:00 | Rakuten Eagles v Seibu Lions | W | 1-11 |
| Japan NPB | 2020/08/15 09:00 | Rakuten Eagles v Seibu Lions | D | 3-3 |
| Japan NPB | 2020/08/14 09:00 | Rakuten Eagles v Seibu Lions | W | 8-13 |
| Japan NPB | 2020/08/13 09:00 | Rakuten Eagles v Seibu Lions | L | 7-4 |
| Japan NPB | 2020/08/12 09:00 | Rakuten Eagles v Seibu Lions | L | 6-2 |
| Japan NPB | 2020/08/11 09:00 | Rakuten Eagles v Seibu Lions | L | 7-5 |
| Japan NPB | 2020/07/19 04:00 | Seibu Lions v Rakuten Eagles | L | 5-9 |
| Japan NPB | 2020/07/18 05:00 | Seibu Lions v Rakuten Eagles | W | 4-3 |
| Japan NPB | 2020/07/17 09:00 | Seibu Lions v Rakuten Eagles | W | 10-2 |
| Japan NPB | 2020/07/16 09:00 | Seibu Lions v Rakuten Eagles | L | 4-7 |
| Japan NPB | 2020/07/15 09:00 | Seibu Lions v Rakuten Eagles | L | 0-11 |
| Japan NPB Exhibition | 2020/06/11 04:00 | Seibu Lions v Rakuten Eagles | W | 1-0 |
| Japan NPB Exhibition | 2020/06/10 04:00 | Rakuten Eagles v Seibu Lions | D | 1-1 |
| Japan NPB Exhibition | 2020/06/09 04:00 | Seibu Lions v Rakuten Eagles | W | 7-5 |
| Japan NPB | 2019/09/26 09:00 | Seibu Lions v Rakuten Eagles | L | 1-7 |
| Japan NPB | 2019/09/23 04:00 | Seibu Lions v Rakuten Eagles | W | 5-3 |
| Japan NPB | 2019/09/22 05:00 | Seibu Lions v Rakuten Eagles | L | 5-7 |
| Japan NPB | 2019/09/21 09:00 | Seibu Lions v Rakuten Eagles | L | 1-6 |
| Japan NPB | 2019/09/20 09:00 | Rakuten Eagles v Seibu Lions | W | 3-5 |