| Japan - NPB Reserve League | 2023/07/02 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | W | 2-0 |
| Japan - NPB Reserve League | 2023/05/17 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | W | 9-7 |
| Japan - NPB Reserve League | 2023/05/16 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | L | 7-10 |
| Japan - NPB Reserve League | 2023/04/23 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | L | 4-9 |
| Japan - NPB Reserve League | 2023/04/22 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | L | 2-8 |
| Japan - NPB Reserve League | 2023/04/21 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | L | 2-7 |
| Japan - NPB Reserve League | 2022/06/24 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | L | 5-14 |
| Japan - NPB Reserve League | 2022/06/10 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | W | 5-2 |
| Japan - NPB Reserve League | 2023/08/18 09:00 | Yakult Swallows - Reserves v Yomiuri Giants - Reserves | L | 0-2 |
| Japan - NPB Reserve League | 2023/08/03 04:00 | Yakult Swallows - Reserves v Nipponham Fighters - Reserves | L | 6-7 |
| Japan - NPB Reserve League | 2023/08/02 04:00 | Yakult Swallows - Reserves v Nipponham Fighters - Reserves | L | 6-13 |
| Japan - NPB Reserve League | 2023/08/01 04:00 | Yakult Swallows - Reserves v Nipponham Fighters - Reserves | D | 4-4 |
| Japan - NPB Reserve League | 2023/07/08 04:00 | Yakult Swallows - Reserves v Yomiuri Giants - Reserves | L | 6-8 |
| Japan - NPB Reserve League | 2023/07/07 04:00 | Yakult Swallows - Reserves v Yomiuri Giants - Reserves | W | 8-3 |
| Japan - NPB Reserve League | 2023/07/02 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | W | 2-0 |
| Japan - NPB Reserve League | 2023/05/28 04:00 | Yakult Swallows - Reserves v Yomiuri Giants - Reserves | W | 5-1 |
| Japan - NPB Reserve League | 2023/08/24 04:00 | Nipponham Fighters - Reserves v Seibu Lions - Reserves | W | 5-8 |
| Japan - NPB Reserve League | 2023/08/23 04:00 | Nipponham Fighters - Reserves v Seibu Lions - Reserves | L | 3-0 |
| Japan - NPB Reserve League | 2023/08/17 01:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | L | 3-2 |
| Japan - NPB Reserve League | 2023/08/16 01:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | L | 7-3 |
| Japan - NPB Reserve League | 2023/08/15 01:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | W | 2-4 |
| Japan - NPB Reserve League | 2023/08/07 04:00 | Seibu Lions - Reserves v Nipponham Fighters - Reserves | D | 3-3 |
| Japan - NPB Reserve League | 2023/08/03 09:00 | Chiba Lotte Marines - Reserves v Seibu Lions - Reserves | W | 1-5 |
| Japan - NPB Reserve League | 2023/07/30 04:00 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | L | 11-9 |