| 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 | 2022/04/29 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | L | 2-5 |
| Japan - NPB Reserve League | 2023/05/28 04:00 | Yakult Swallows - Reserves v Yomiuri Giants - Reserves | W | 5-1 |
| Japan - NPB Reserve League | 2023/05/26 04:00 | Yakult Swallows - Reserves v Yomiuri Giants - Reserves | L | 3-8 |
| 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 | 2023/05/02 04:00 | Yakult Swallows - Reserves v Yomiuri Giants - Reserves | W | 4-2 |
| 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 | 2023/06/25 04:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | W | 2-3 |
| Japan - NPB Reserve League | 2023/06/24 04:30 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | W | 1-6 |
| Japan - NPB Reserve League | 2023/06/23 09:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | L | 2-1 |
| Japan - NPB Reserve League | 2023/06/22 04:00 | Nipponham Fighters - Reserves v Seibu Lions - Reserves | L | 12-3 |
| Japan - NPB Reserve League | 2023/06/21 04:00 | Nipponham Fighters - Reserves v Seibu Lions - Reserves | W | 2-17 |
| Japan - NPB Reserve League | 2023/06/20 04:00 | Nipponham Fighters - Reserves v Seibu Lions - Reserves | W | 2-3 |
| Japan - NPB Reserve League | 2023/06/10 04:00 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | L | 10-3 |
| Japan - NPB Reserve League | 2023/06/08 04:00 | Seibu Lions - Reserves v Yomiuri Giants - Reserves | W | 4-2 |