| Japan - NPB - Reserveliga | 2021/08/26 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | L | 3-8 |
| Japan - NPB - Reserveliga | 2021/08/25 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | W | 4-0 |
| Japan - NPB - Reserveliga | 2021/08/24 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | W | 13-1 |
| Japan - NPB - Reserveliga | 2021/07/22 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | L | 2-3 |
| Japan - NPB - Reserveliga | 2021/07/20 08:45 | Yakult Swallows - Reserve v Seibu Lions - Reserve | W | 4-3 |
| Japan - NPB - Reserveliga | 2020/10/25 03:30 | Yakult Swallows - Reserve v Seibu Lions - Reserve | L | 3-4 |
| Japan - NPB - Reserveliga | 2020/10/24 03:30 | Yakult Swallows - Reserve v Seibu Lions - Reserve | L | 0-5 |
| Japan - NPB - Reserveliga | 2020/10/23 03:30 | Yakult Swallows - Reserve v Seibu Lions - Reserve | D | 0-0 |
| Japan - NPB - Reserveliga | 2022/04/08 04:00 | Yakult Swallows - Reserve v Nipponham Fighters - Reserve | L | 2-3 |
| Japan - NPB - Reserveliga | 2021/11/01 03:00 | SoftBank Hawks - Reserve v Yakult Swallows - Reserve | L | 4-3 |
| Japan - NPB - Reserveliga | 2021/10/30 03:30 | Hanshin Tigers - Reserve v Yakult Swallows - Reserve | L | 6-1 |
| Japan - NPB - Reserveliga | 2021/09/22 04:00 | Yakult Swallows - Reserve v Nipponham Fighters - Reserve | W | 13-3 |
| Japan - NPB - Reserveliga | 2021/09/20 04:00 | Yakult Swallows - Reserve v Yomiuri Giants - Reserve | W | 14-4 |
| Japan - NPB - Reserveliga | 2021/09/19 04:00 | Yakult Swallows - Reserve v Yomiuri Giants - Reserve | L | 3-4 |
| Japan - NPB - Reserveliga | 2021/08/26 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | L | 3-8 |
| Japan - NPB - Reserveliga | 2021/08/25 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | W | 4-0 |
| Japan - NPB - Reserveliga | 2022/04/08 04:00 | Seibu Lions - Reserve v Yomiuri Giants - Reserve | L | 5-9 |
| Japan - NPB - Reserveliga | 2022/04/07 04:00 | Nipponham Fighters - Reserve v Seibu Lions - Reserve | W | 0-7 |
| Japan - NPB - Reserveliga | 2022/03/23 04:00 | Chiba Lotte Marines - Reserve v Seibu Lions - Reserve | W | 2-3 |
| Japan - NPB - Reserveliga | 2021/11/01 02:00 | Hiroshima Carp - Reserve v Seibu Lions - Reserve | L | 4-2 |
| Japan - NPB - Reserveliga | 2021/10/28 03:26 | Hanshin Tigers - Reserve v Seibu Lions - Reserve | L | 9-1 |
| Japan - NPB - Reserveliga | 2021/10/27 03:30 | Yomiuri Giants - Reserve v Seibu Lions - Reserve | L | 4-1 |
| Japan - NPB - Reserveliga | 2021/10/03 04:00 | Yomiuri Giants - Reserve v Seibu Lions - Reserve | L | 5-1 |
| Japan - NPB - Reserveliga | 2021/09/20 04:00 | Chiba Lotte Marines - Reserve v Seibu Lions - Reserve | D | 0-0 |