| Japan NPB Reserve League | 2023/09/12 04:00 | Yakult Swallows Reserves v Seibu Lions Reserves | L | 2-8 |
| Japan NPB Reserve League | 2023/09/11 04:00 | Yakult Swallows Reserves v Seibu Lions Reserves | L | 7-13 |
| 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 | 2023/09/12 04:00 | Yakult Swallows Reserves v Seibu Lions Reserves | L | 2-8 |
| Japan NPB Reserve League | 2023/09/11 04:00 | Yakult Swallows Reserves v Seibu Lions Reserves | L | 7-13 |
| 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 | 2023/09/12 04:00 | Yakult Swallows Reserves v Seibu Lions Reserves | W | 2-8 |
| Japan NPB Reserve League | 2023/09/11 04:00 | Yakult Swallows Reserves v Seibu Lions Reserves | W | 7-13 |
| 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 |