| Japonia - NPB Reserve League | 2023/07/25 04:00 | Seibu Lions - Rezerwa v Yomiuri Giants - Rezerwa | W | 5-3 |
| Japonia - NPB Reserve League | 2023/06/25 04:00 | Yomiuri Giants - Rezerwa v Seibu Lions - Rezerwa | W | 2-3 |
| Japonia - NPB Reserve League | 2023/06/24 04:30 | Yomiuri Giants - Rezerwa v Seibu Lions - Rezerwa | W | 1-6 |
| Japonia - NPB Reserve League | 2023/06/23 09:00 | Yomiuri Giants - Rezerwa v Seibu Lions - Rezerwa | L | 2-1 |
| Japonia - NPB Reserve League | 2023/06/08 04:00 | Seibu Lions - Rezerwa v Yomiuri Giants - Rezerwa | W | 4-2 |
| Japonia - NPB Reserve League | 2023/06/07 04:00 | Seibu Lions - Rezerwa v Yomiuri Giants - Rezerwa | W | 6-4 |
| Japonia - NPB Reserve League | 2023/06/06 04:00 | Seibu Lions - Rezerwa v Yomiuri Giants - Rezerwa | W | 5-1 |
| Japonia - NPB Reserve League | 2023/05/12 04:00 | Yomiuri Giants - Rezerwa v Seibu Lions - Rezerwa | W | 3-4 |
| Japonia - NPB Reserve League | 2023/09/24 04:00 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | W | 2-3 |
| Japonia - NPB Reserve League | 2023/09/23 04:30 | Yokohama Bay Stars - Rezerwa v Seibu Lions - Rezerwa | W | 0-2 |
| 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 | 2023/09/20 07:00 | Rakuten Eagles - Rezerwa v Yomiuri Giants - Rezerwa | W | 0-8 |
| Japonia - NPB Reserve League | 2023/09/19 07:00 | Rakuten Eagles - Rezerwa v Yomiuri Giants - Rezerwa | W | 1-5 |
| Japonia - NPB Reserve League | 2023/09/13 07:00 | Chiba Lotte Marines - Rezerwa v Yomiuri Giants - Rezerwa | W | 2-5 |
| Japonia - NPB Reserve League | 2023/09/12 07:00 | Chiba Lotte Marines - Rezerwa v Yomiuri Giants - Rezerwa | L | 4-1 |
| Japonia - NPB Reserve League | 2023/09/07 09:00 | Nipponham Fighters - Rezerwa v Yomiuri Giants - Rezerwa | W | 1-2 |
| Japonia - NPB Reserve League | 2023/09/06 09:00 | Nipponham Fighters - Rezerwa v Yomiuri Giants - Rezerwa | L | 5-3 |
| Japonia - NPB Reserve League | 2023/08/18 09:00 | Yakult Swallows - Rezerwa v Yomiuri Giants - Rezerwa | W | 0-2 |
| Japonia - NPB Reserve League | 2023/08/17 04:00 | Yomiuri Giants - Rezerwa v Nipponham Fighters - Rezerwa | L | 8-9 |