| 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 | 2020/08/30 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | W | 7-2 |
| Japan - NPB - Reserveliga | 2020/08/09 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | L | 1-7 |
| Japan - NPB - Reserveliga | 2020/08/07 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | L | 0-5 |
| Japan - NPB - Reserveliga | 2019/06/28 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | W | 4-3 |
| Japan - NPB - Reserveliga | 2021/07/20 08:45 | Yakult Swallows - Reserve v Seibu Lions - Reserve | W | 4-3 |
| Japan - NPB - Reserveliga | 2021/06/24 07:00 | Yakult Swallows - Reserve v Yomiuri Giants - Reserve | L | 0-3 |
| Japan - NPB - Reserveliga | 2021/06/22 02:00 | Yakult Swallows - Reserve v Yomiuri Giants - Reserve | W | 8-2 |
| Japan - NPB - Reserveliga | 2020/11/26 03:30 | Orix Buffaloes - Reserve v Yakult Swallows - Reserve | L | 5-3 |
| Japan - NPB - Reserveliga | 2020/11/24 03:30 | Yakult Swallows - Reserve v Chunichi Dragons - Reserve | W | 8-0 |
| Japan - NPB - Reserveliga | 2020/11/23 03:30 | Yokohama Bay Stars - Reserve v Yakult Swallows - Reserve | W | 1-5 |
| Japan - NPB - Reserveliga | 2020/11/18 03:30 | Hanshin Tigers - Reserve v Yakult Swallows - Reserve | L | 7-1 |
| Japan - NPB - Reserveliga | 2020/11/17 03:55 | Yakult Swallows - Reserve v Orix Buffaloes - Reserve | D | 0-0 |
| Japan - NPB - Reserveliga | 2021/07/20 08:45 | Yakult Swallows - Reserve v Seibu Lions - Reserve | L | 4-3 |
| Japan - NPB - Reserveliga | 2021/07/05 08:45 | Nipponham Fighters - Reserve v Seibu Lions - Reserve | W | 6-8 |
| Japan - NPB - Reserveliga | 2021/06/17 04:00 | Nipponham Fighters - Reserve v Seibu Lions - Reserve | L | 2-1 |
| Japan - NPB - Reserveliga | 2021/04/22 04:00 | Seibu Lions - Reserve v Yomiuri Giants - Reserve | L | 0-14 |
| Japan - NPB - Reserveliga | 2021/03/26 03:54 | Yokohama Bay Stars - Reserve v Seibu Lions - Reserve | W | 6-8 |
| Japan - NPB - Reserveliga | 2021/03/24 04:00 | Yomiuri Giants - Reserve v Seibu Lions - Reserve | W | 1-2 |
| Japan - NPB - Reserveliga | 2021/03/23 04:00 | Yomiuri Giants - Reserve v Seibu Lions - Reserve | W | 0-1 |
| Japan - NPB - Reserveliga | 2020/11/29 02:00 | Seibu Lions - Reserve v Hiroshima Carp - Reserve | W | 2-0 |