| Japonia - NPB Reserve League | 2019/06/21 02:00 | Seibu Lions - Rezerwa v Yokohama Bay Stars - Rezerwa | L | 1-10 |
| Japonia - NPB Reserve League | 2019/05/31 09:00 | Seibu Lions - Rezerwa v Yokohama Bay Stars - Rezerwa | L | 1-4 |
| Japonia - NPB Reserve League | 2019/06/21 02:00 | Seibu Lions - Rezerwa v Yokohama Bay Stars - Rezerwa | L | 1-10 |
| Japonia - NPB Reserve League | 2019/06/20 04:00 | Chiba Lotte Marines - Rezerwa v Seibu Lions - Rezerwa | L | 10-6 |
| Japonia - NPB Reserve League | 2019/06/19 04:00 | Chiba Lotte Marines - Rezerwa v Seibu Lions - Rezerwa | W | 2-4 |
| Japonia - NPB Reserve League | 2019/06/18 04:00 | Chiba Lotte Marines - Rezerwa v Seibu Lions - Rezerwa | L | 8-4 |
| Japonia - NPB Reserve League | 2019/06/16 04:00 | Seibu Lions - Rezerwa v Yomiuri Giants - Rezerwa | W | 9-4 |
| Japonia - NPB Reserve League | 2019/06/12 04:00 | Seibu Lions - Rezerwa v Nipponham Fighters - Rezerwa | L | 1-5 |
| Japonia - NPB Reserve League | 2019/05/31 09:00 | Seibu Lions - Rezerwa v Yokohama Bay Stars - Rezerwa | L | 1-4 |
| Japonia - NPB Reserve League | 2019/05/24 04:00 | Nipponham Fighters - Rezerwa v Seibu Lions - Rezerwa | W | 1-4 |
| Japonia - NPB Reserve League | 2019/06/21 02:00 | Seibu Lions - Rezerwa v Yokohama Bay Stars - Rezerwa | W | 1-10 |
| Japonia - NPB Reserve League | 2019/06/20 04:00 | Yokohama Bay Stars - Rezerwa v Yakult Swallows - Rezerwa | W | 6-5 |
| Japonia - NPB Reserve League | 2019/06/19 04:00 | Yokohama Bay Stars - Rezerwa v Yakult Swallows - Rezerwa | W | 6-0 |
| Japonia - NPB Reserve League | 2019/06/18 04:00 | Yokohama Bay Stars - Rezerwa v Yakult Swallows - Rezerwa | D | 0-0 |
| Japonia - NPB Reserve League | 2019/06/16 04:00 | Chiba Lotte Marines - Rezerwa v Yokohama Bay Stars - Rezerwa | L | 3-0 |
| Japonia - NPB Reserve League | 2019/05/31 09:00 | Seibu Lions - Rezerwa v Yokohama Bay Stars - Rezerwa | W | 1-4 |
| Japonia - NPB Reserve League | 2019/05/28 09:00 | Yomiuri Giants - Rezerwa v Yokohama Bay Stars - Rezerwa | W | 7-8 |
| Japonia - NPB Reserve League | 2019/05/25 04:00 | Yokohama Bay Stars - Rezerwa v Chiba Lotte Marines - Rezerwa | L | 0-4 |