| Japan NPB Reserve League | 2024/04/19 04:00 | Oisix Niigata v Nipponham Fighters Reserves | L | 3-7 |
| Japan NPB Reserve League | 2024/04/30 05:00 | Seibu Lions Reserves v Yomiuri Giants Reserves | D | 4-4 |
| Japan NPB Reserve League | 2024/04/29 04:00 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | W | 0-1 |
| Japan NPB Reserve League | 2024/04/22 04:00 | Rakuten Eagles Reserves v Seibu Lions Reserves | L | 5-2 |
| Japan NPB Reserve League | 2024/04/20 04:00 | Rakuten Eagles Reserves v Seibu Lions Reserves | D | 0-0 |
| Japan NPB Reserve League | 2024/04/13 04:00 | Yomiuri Giants Reserves v Seibu Lions Reserves | L | 3-2 |
| Japan NPB Reserve League | 2024/04/12 04:00 | Yomiuri Giants Reserves v Seibu Lions Reserves | W | 4-6 |
| Japan Phoenix League | 2023/10/30 02:00 | Seibu Lions Reserves v Hiroshima Carp Reserves | D | 0-0 |
| Japan Phoenix League | 2023/10/14 03:30 | Hanshin Tigers Reserves v Seibu Lions Reserves | W | 1-2 |