| Japan NPB Reserve League | 2023/09/24 04:00 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | L | 2-3 |
| Japan NPB Reserve League | 2023/09/23 04:30 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | L | 0-2 |
| Japan NPB Reserve League | 2023/09/22 09:00 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | W | 4-0 |
| Japan NPB Reserve League | 2023/07/13 04:00 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | D | 6-6 |
| Japan NPB Reserve League | 2023/07/12 09:00 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | L | 1-2 |
| Japan NPB Reserve League | 2023/07/11 09:00 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | L | 3-5 |
| Japan NPB Reserve League | 2023/05/25 04:00 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | D | 4-4 |
| Japan NPB Reserve League | 2023/05/24 04:30 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | W | 2-0 |
| Japan NPB Reserve League | 2024/04/25 04:00 | Yokohama Bay Stars Reserves v Nipponham Fighters Reserves | W | 7-3 |
| Japan NPB Reserve League | 2024/04/23 04:00 | Yokohama Bay Stars Reserves v Nipponham Fighters Reserves | L | 3-8 |
| Japan Phoenix League | 2023/10/29 03:30 | Hiroshima Carp Reserves v Yokohama Bay Stars Reserves | L | 6-5 |
| Japan Phoenix League | 2023/10/26 03:30 | Yokohama Bay Stars Reserves v KBO Farm 1 | W | 6-1 |
| Japan Phoenix League | 2023/10/16 03:30 | IPBL Japan v Yokohama Bay Stars Reserves | L | 9-1 |
| Japan NPB Reserve League | 2023/09/24 04:00 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | L | 2-3 |
| Japan NPB Reserve League | 2023/09/23 04:30 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | L | 0-2 |
| Japan NPB Reserve League | 2023/09/22 09:00 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | W | 4-0 |
| 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 |
| Japan NPB Reserve League | 2023/09/29 07:00 | Seibu Lions Reserves v Yomiuri Giants Reserves | L | 1-6 |
| Japan NPB Reserve League | 2023/09/24 04:00 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | W | 2-3 |