Head to Head
| Japan NPB | 2021/05/12 05:00 | Seibu Lions v Rakuten Eagles | L | 3-4 |
| Japan NPB | 2021/05/11 09:00 | Seibu Lions v Rakuten Eagles | D | 3-3 |
| Japan NPB | 2021/04/25 04:00 | Seibu Lions v Rakuten Eagles | L | 4-8 |
| Japan NPB | 2021/04/24 05:00 | Seibu Lions v Rakuten Eagles | L | 1-2 |
| Japan NPB | 2021/04/23 09:00 | Seibu Lions v Rakuten Eagles | D | 2-2 |
| Japan NPB | 2021/04/08 08:45 | Rakuten Eagles v Seibu Lions | L | 4-0 |
| Japan NPB | 2021/04/07 08:45 | Rakuten Eagles v Seibu Lions | L | 6-3 |
| Japan NPB | 2021/04/06 08:45 | Rakuten Eagles v Seibu Lions | L | 13-2 |
Home History
| Japan NPB | 2021/05/21 08:45 | Nippon Ham Fighters v Seibu Lions | W | 1-7 |
| Japan NPB | 2021/05/20 08:45 | Softbank Hawks v Seibu Lions | W | 2-7 |
| Japan NPB | 2021/05/19 08:45 | Softbank Hawks v Seibu Lions | L | 6-5 |
| Japan NPB | 2021/05/18 08:45 | Softbank Hawks v Seibu Lions | L | 8-2 |
| Japan NPB | 2021/05/16 05:00 | Seibu Lions v Lotte Marines | D | 6-6 |
| Japan NPB | 2021/05/15 05:00 | Seibu Lions v Lotte Marines | W | 3-0 |
| Japan NPB | 2021/05/14 08:45 | Seibu Lions v Lotte Marines | D | 4-4 |
| Japan NPB | 2021/05/12 05:00 | Seibu Lions v Rakuten Eagles | L | 3-4 |
Away History
| Japan NPB | 2021/05/21 08:45 | Rakuten Eagles v Lotte Marines | W | 13-6 |
| Japan NPB | 2021/05/20 09:00 | Nippon Ham Fighters v Rakuten Eagles | L | 4-1 |
| Japan NPB | 2021/05/19 09:00 | Nippon Ham Fighters v Rakuten Eagles | W | 2-3 |
| Japan NPB | 2021/05/18 09:00 | Nippon Ham Fighters v Rakuten Eagles | W | 2-3 |
| Japan NPB | 2021/05/16 05:00 | Rakuten Eagles v Orix Buffaloes | W | 1-0 |
| Japan NPB | 2021/05/15 06:30 | Rakuten Eagles v Orix Buffaloes | L | 3-4 |
| Japan NPB | 2021/05/14 09:00 | Rakuten Eagles v Orix Buffaloes | L | 4-9 |
| Japan NPB | 2021/05/12 05:00 | Seibu Lions v Rakuten Eagles | W | 3-4 |