| Japan NPB Reserve League | 2019/07/06 07:00 | Seibu Lions Reserves v Yomiuri Giants Reserves | L | 5-0 |
| Japan NPB Reserve League | 2019/07/05 07:00 | Seibu Lions Reserves v Yomiuri Giants Reserves | L | 3-1 |
| Japan NPB Reserve League | 2019/06/16 04:00 | Seibu Lions Reserves v Yomiuri Giants Reserves | L | 9-4 |