| 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 | 2020/10/08 03:30 | Nipponham Fighters - Reserve v Seibu Lions - Reserve | D | 0-0 |
| Japan - NPB - Reserveliga | 2020/10/07 03:30 | Nipponham Fighters - Reserve v Seibu Lions - Reserve | L | 11-5 |
| Japan - NPB - Reserveliga | 2020/10/06 03:30 | Nipponham Fighters - Reserve v Seibu Lions - Reserve | L | 11-2 |
| Japan - NPB - Reserveliga | 2020/09/02 03:56 | Nipponham Fighters - Reserve v Seibu Lions - Reserve | L | 6-5 |
| Japan - NPB - Reserveliga | 2020/09/01 04:00 | Nipponham Fighters - Reserve v Seibu Lions - Reserve | L | 6-4 |
| Japan - NPB - Reserveliga | 2020/07/28 04:00 | Nipponham Fighters - Reserve v Seibu Lions - Reserve | W | 5-8 |
| Japan - NPB - Reserveliga | 2021/08/01 06:00 | Chiba Lotte Marines - Reserve v Seibu Lions - Reserve | L | 4-3 |
| Japan - NPB - Reserveliga | 2021/07/30 04:00 | Chiba Lotte Marines - Reserve v Seibu Lions - Reserve | D | 4-4 |
| Japan - NPB - Reserveliga | 2021/07/29 04:00 | Yokohama Bay Stars - Reserve v Seibu Lions - Reserve | W | 6-10 |
| Japan - NPB - Reserveliga | 2021/07/28 04:00 | Yokohama Bay Stars - Reserve v Seibu Lions - Reserve | L | 8-2 |
| Japan - NPB - Reserveliga | 2021/07/25 07:00 | Seibu Lions - Reserve v Yomiuri Giants - Reserve | W | 5-2 |
| Japan - NPB - Reserveliga | 2021/07/24 07:00 | Seibu Lions - Reserve v Yomiuri Giants - Reserve | L | 2-3 |
| Japan - NPB - Reserveliga | 2021/07/23 07:00 | Seibu Lions - Reserve v Yomiuri Giants - Reserve | W | 9-4 |
| Japan - NPB - Reserveliga | 2021/07/22 04:00 | Yakult Swallows - Reserve v Seibu Lions - Reserve | W | 2-3 |
| Japan - NPB - Reserveliga | 2021/08/01 06:00 | Yakult Swallows - Reserve v Nipponham Fighters - Reserve | W | 6-9 |
| Japan - NPB - Reserveliga | 2021/07/31 04:00 | Yakult Swallows - Reserve v Nipponham Fighters - Reserve | L | 6-1 |
| Japan - NPB - Reserveliga | 2021/07/30 04:00 | Yakult Swallows - Reserve v Nipponham Fighters - Reserve | W | 2-6 |
| Japan - NPB - Reserveliga | 2021/07/22 04:00 | Chiba Lotte Marines - Reserve v Nipponham Fighters - Reserve | L | 4-3 |
| Japan - NPB - Reserveliga | 2021/07/21 04:00 | Chiba Lotte Marines - Reserve v Nipponham Fighters - Reserve | L | 5-4 |
| Japan - NPB - Reserveliga | 2021/07/20 04:00 | Chiba Lotte Marines - Reserve v Nipponham Fighters - Reserve | L | 7-0 |
| Japan - NPB - Reserveliga | 2021/07/12 04:00 | Yokohama Bay Stars - Reserve v Nipponham Fighters - Reserve | W | 0-9 |
| Japan - NPB - Reserveliga | 2021/07/05 08:45 | Nipponham Fighters - Reserve v Seibu Lions - Reserve | L | 6-8 |