| 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 | 2023/05/23 09:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | L | 0-1 |
| Japonia - NPB Reserve League | 2022/09/15 09:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | L | 2-4 |
| Japonia - NPB Reserve League | 2023/09/22 09:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | W | 4-0 |
| Japonia - NPB Reserve League | 2023/09/14 04:00 | Yokohama Bay Stars - Rezerwa v Nipponham Fighters - Rezerwa | W | 7-0 |
| Japonia - NPB Reserve League | 2023/09/13 04:00 | Yokohama Bay Stars - Rezerwa v Nipponham Fighters - Rezerwa | D | 2-2 |
| Japonia - NPB Reserve League | 2023/09/12 04:00 | Yokohama Bay Stars - Rezerwa v Nipponham Fighters - Rezerwa | L | 5-6 |
| Japonia - NPB Reserve League | 2023/08/06 04:00 | Yokohama Bay Stars - Rezerwa v Yomiuri Giants - Rezerwa | W | 9-4 |
| Japonia - NPB Reserve League | 2023/08/05 05:00 | Yokohama Bay Stars - Rezerwa v Yomiuri Giants - Rezerwa | L | 0-2 |
| 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 | 2023/09/22 09:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | L | 4-0 |
| Japonia - NPB Reserve League | 2023/09/17 04:00 | Chiba Lotte Marines - Rezerwa v Seibu Lions - Rezerwa | W | 4-10 |
| Japonia - NPB Reserve League | 2023/09/16 04:00 | Chiba Lotte Marines - Rezerwa v Seibu Lions - Rezerwa | W | 1-2 |
| Japonia - NPB Reserve League | 2023/09/15 04:00 | Chiba Lotte Marines - Rezerwa v Seibu Lions - Rezerwa | D | 6-6 |
| Japonia - NPB Reserve League | 2023/09/13 04:00 | Yakult Swallows - Rezerwa v Seibu Lions - Rezerwa | L | 5-4 |
| Japonia - NPB Reserve League | 2023/09/12 04:00 | Yakult Swallows - Rezerwa v Seibu Lions - Rezerwa | W | 2-8 |
| Japonia - NPB Reserve League | 2023/09/11 04:00 | Yakult Swallows - Rezerwa v Seibu Lions - Rezerwa | W | 7-13 |
| Japonia - NPB Reserve League | 2023/08/24 04:00 | Nipponham Fighters - Rezerwa v Seibu Lions - Rezerwa | W | 5-8 |