| Japan - NPB Reserve League | 2020/10/14 03:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | L | 10-1 |
| Japan - NPB Reserve League | 2020/10/13 03:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | D | 4-4 |
| Japan - NPB Reserve League | 2020/10/12 03:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | L | 7-2 |
| Japan - NPB Reserve League | 2020/09/17 04:00 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | D | 6-6 |
| Japan - NPB Reserve League | 2020/07/09 04:00 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | W | 7-8 |
| Japan - NPB Reserve League | 2020/07/07 03:59 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2019/07/25 04:00 | Seibu Lions - Reserves v Rakuten Eagles - Reserves | L | 0-7 |
| Japan - NPB Reserve League | 2019/07/24 04:00 | Seibu Lions - Reserves v Rakuten Eagles - Reserves | L | 3-5 |
| Japan - NPB Reserve League | 2020/11/27 03:30 | SoftBank Hawks - Reserves v Seibu Lions - Reserves | L | 3-2 |
| Japan - NPB Reserve League | 2020/11/22 03:30 | Chiba Lotte Marines - Reserves v Seibu Lions - Reserves | L | 9-4 |
| Japan - NPB Reserve League | 2020/11/21 03:30 | Seibu Lions - Reserves v SoftBank Hawks - Reserves | W | 6-5 |
| Japan - NPB Reserve League | 2020/10/30 03:30 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | D | 2-2 |
| Japan - NPB Reserve League | 2020/10/25 03:30 | Yakult Swallows - Reserves v Seibu Lions - Reserves | W | 3-4 |
| Japan - NPB Reserve League | 2020/10/24 03:30 | Yakult Swallows - Reserves v Seibu Lions - Reserves | W | 0-5 |
| Japan - NPB Reserve League | 2020/10/23 03:30 | Yakult Swallows - Reserves v Seibu Lions - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2020/10/14 03:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | L | 10-1 |
| Japan - NPB Reserve League | 2020/11/26 03:30 | SoftBank Hawks - Reserves v Rakuten Eagles - Reserves | W | 2-3 |
| Japan - NPB Reserve League | 2020/11/18 03:30 | Hiroshima Carp - Reserves v Rakuten Eagles - Reserves | L | 8-0 |
| Japan - NPB Reserve League | 2020/11/12 03:30 | Rakuten Eagles - Reserves v Chunichi Dragons - Reserves | L | 1-2 |
| Japan - NPB Reserve League | 2020/11/07 04:00 | Rakuten Eagles - Reserves v SoftBank Hawks - Reserves | W | 6-4 |
| Japan - NPB Reserve League | 2020/10/28 04:00 | Rakuten Eagles - Reserves v Yomiuri Giants - Reserves | W | 7-0 |
| Japan - NPB Reserve League | 2020/10/27 04:00 | Rakuten Eagles - Reserves v Yomiuri Giants - Reserves | L | 7-8 |
| Japan - NPB Reserve League | 2020/10/14 03:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | W | 10-1 |
| Japan - NPB Reserve League | 2020/10/13 03:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | D | 4-4 |