| Japan NPB Reserve League | 2020/06/28 04:00 | Seibu Lions Reserves v Chiba Lotte Marines Reserves | D | 0-0 |
| Campeonato GPO | 2020/03/27 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | W | 5-4 |
| Japan NPB Reserve League | 2019/07/27 04:16 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | L | 1-2 |
| Japan NPB Reserve League | 2019/06/20 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | W | 10-6 |
| Japan NPB Reserve League | 2019/06/19 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | L | 2-4 |
| Japan NPB Reserve League | 2019/06/18 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | W | 8-4 |
| Japan NPB Reserve League | 2020/07/26 04:00 | Chiba Lotte Marines Reserves v Yomiuri Giants Reserves | L | 1-2 |
| Japan NPB Reserve League | 2020/07/24 07:00 | Chiba Lotte Marines Reserves v Yomiuri Giants Reserves | L | 2-3 |
| Japan NPB Reserve League | 2020/07/19 04:00 | Chiba Lotte Marines Reserves v Yomiuri Giants Reserves | L | 1-2 |
| Japan NPB Reserve League | 2020/07/17 04:00 | Chiba Lotte Marines Reserves v Yomiuri Giants Reserves | L | 2-4 |
| Japan NPB Reserve League | 2020/07/12 04:00 | Chiba Lotte Marines Reserves v Nipponham Fighters Reserves | W | 5-1 |
| Japan NPB Reserve League | 2020/07/11 04:00 | Chiba Lotte Marines Reserves v Nipponham Fighters Reserves | W | 4-3 |
| Japan NPB Reserve League | 2020/07/10 04:00 | Chiba Lotte Marines Reserves v Nipponham Fighters Reserves | L | 1-6 |
| Japan NPB Reserve League | 2020/06/28 04:00 | Seibu Lions Reserves v Chiba Lotte Marines Reserves | D | 0-0 |
| Japan NPB Reserve League | 2020/08/09 04:00 | Yakult Swallows Reserves v Seibu Lions Reserves | W | 1-7 |
| Japan NPB Reserve League | 2020/08/07 04:00 | Yakult Swallows Reserves v Seibu Lions Reserves | W | 0-5 |
| Japan NPB Reserve League | 2020/07/28 04:00 | Nipponham Fighters Reserves v Seibu Lions Reserves | W | 5-8 |
| Japan NPB Reserve League | 2020/07/24 04:30 | Yokohama Bay Stars Reserves v Seibu Lions Reserves | L | 4-3 |
| Japan NPB Reserve League | 2020/07/16 04:00 | Yomiuri Giants Reserves v Seibu Lions Reserves | W | 2-4 |
| Japan NPB Reserve League | 2020/07/15 04:00 | Yomiuri Giants Reserves v Seibu Lions Reserves | D | 3-3 |
| Japan NPB Reserve League | 2020/07/09 04:00 | Rakuten Eagles Reserves v Seibu Lions Reserves | W | 7-8 |
| Japan NPB Reserve League | 2020/07/07 03:59 | Rakuten Eagles Reserves v Seibu Lions Reserves | D | 0-0 |