| Japonia - NPB Reserve League | 2023/09/24 04:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | L | 2-3 |
| Japonia - NPB Reserve League | 2023/09/23 04:30 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | L | 0-2 |
| Japonia - NPB Reserve League | 2023/09/22 09:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | W | 4-0 |
| Japonia - NPB Reserve League | 2023/07/13 04:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | D | 6-6 |
| Japonia - NPB Reserve League | 2023/07/12 09:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | L | 1-2 |
| Japonia - NPB Reserve League | 2023/07/11 09:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | L | 3-5 |
| Japonia - NPB Reserve League | 2023/05/25 04:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | D | 4-4 |
| Japonia - NPB Reserve League | 2023/05/24 04:30 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | W | 2-0 |
| Japonia - NPB Reserve League | 2024/04/25 04:00 | Yokohama Bay Stars - Rezerwa v Nipponham Fighters - Rezerwa | W | 7-3 |
| Japonia - NPB Reserve League | 2024/04/23 04:00 | Yokohama Bay Stars - Rezerwa v Nipponham Fighters - Rezerwa | L | 3-8 |
| Japonia - Phoenix League | 2023/10/29 03:30 | Hiroshima Carp - Rezerwa v Yokohama Bay Stars - Rezerwa | L | 6-5 |
| Japonia - Phoenix League | 2023/10/26 03:30 | Yokohama Bay Stars - Rezerwa v KBO Farm 1 | W | 6-1 |
| Japonia - Phoenix League | 2023/10/16 03:30 | IPBL Japan v Yokohama Bay Stars - Rezerwa | L | 9-1 |
| Japonia - NPB Reserve League | 2023/09/24 04:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | L | 2-3 |
| Japonia - NPB Reserve League | 2023/09/23 04:30 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | L | 0-2 |
| Japonia - NPB Reserve League | 2023/09/22 09:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | W | 4-0 |
| Japonia - NPB Reserve League | 2024/04/22 04:00 | Rakuten Eagles - Rezerwa v Seibu Lions - Rezerwa | L | 5-2 |
| Japonia - NPB Reserve League | 2024/04/20 04:00 | Rakuten Eagles - Rezerwa v Seibu Lions - Rezerwa | D | 0-0 |
| Japonia - NPB Reserve League | 2024/04/13 04:00 | Yomiuri Giants - Rezerwa v Seibu Lions - Rezerwa | L | 3-2 |
| Japonia - NPB Reserve League | 2024/04/12 04:00 | Yomiuri Giants - Rezerwa v Seibu Lions - Rezerwa | W | 4-6 |
| Japonia - Phoenix League | 2023/10/30 02:00 | Seibu Lions - Rezerwa v Hiroshima Carp - Rezerwa | D | 0-0 |
| Japonia - Phoenix League | 2023/10/14 03:30 | Hanshin Tigers - Rezerwa v Seibu Lions - Rezerwa | W | 1-2 |
| Japonia - NPB Reserve League | 2023/09/29 07:00 | Seibu Lions - Rezerwa v Yomiuri Giants - Rezerwa | L | 1-6 |
| Japonia - NPB Reserve League | 2023/09/24 04:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | W | 2-3 |