| Japan - NPB Reserve League | 2019/06/12 04:00 | Seibu Lions - Reserves v Nipponham Fighters - Reserves | L | 1-5 |
| Japan - NPB Reserve League | 2019/05/24 04:00 | Nipponham Fighters - Reserves v Seibu Lions - Reserves | W | 1-4 |
| Japan - NPB Reserve League | 2019/04/24 04:21 | Seibu Lions - Reserves v Nipponham Fighters - Reserves | L | 3-7 |
| Japan - NPB Reserve League | 2019/04/23 04:00 | Seibu Lions - Reserves v Nipponham Fighters - Reserves | L | 0-5 |
| Japan - NPB Reserve League | 2019/06/28 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | L | 4-3 |
| Japan - NPB Reserve League | 2019/06/27 04:00 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | W | 0-2 |
| Japan - NPB Reserve League | 2019/06/26 04:00 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | W | 5-6 |
| Japan - NPB Reserve League | 2019/06/25 04:00 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | L | 5-1 |
| Japan - NPB Reserve League | 2019/06/23 04:00 | Seibu Lions - Reserves v Yokohama Bay Stars - Reserves | L | 0-4 |
| Japan - NPB Reserve League | 2019/06/22 04:00 | Seibu Lions - Reserves v Yokohama Bay Stars - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2019/06/21 02:00 | Seibu Lions - Reserves v Yokohama Bay Stars - Reserves | L | 1-10 |
| Japan - NPB Reserve League | 2019/06/20 04:00 | Chiba Lotte Marines - Reserves v Seibu Lions - Reserves | L | 10-6 |
| Japan - NPB Reserve League | 2019/06/27 04:00 | Nipponham Fighters - Reserves v Yakult Swallows - Reserves | W | 9-1 |
| Japan - NPB Reserve League | 2019/06/26 04:00 | Nipponham Fighters - Reserves v Yakult Swallows - Reserves | W | 2-1 |
| Japan - NPB Reserve League | 2019/06/25 04:00 | Nipponham Fighters - Reserves v Yakult Swallows - Reserves | L | 3-4 |
| Japan - NPB Reserve League | 2019/06/15 04:00 | Nipponham Fighters - Reserves v Rakuten Eagles - Reserves | D | 4-4 |
| Japan - NPB Reserve League | 2019/06/14 04:00 | Nipponham Fighters - Reserves v Rakuten Eagles - Reserves | L | 0-2 |
| Japan - NPB Reserve League | 2019/06/12 04:00 | Seibu Lions - Reserves v Nipponham Fighters - Reserves | W | 1-5 |
| Japan - NPB Reserve League | 2019/06/06 04:00 | Nipponham Fighters - Reserves v Yomiuri Giants - Reserves | W | 6-1 |
| Japan - NPB Reserve League | 2019/06/04 04:00 | Nipponham Fighters - Reserves v Yomiuri Giants - Reserves | L | 4-10 |