| Japan NPB Reserve League | 2021/09/20 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | D | 0-0 |
| Japan NPB Reserve League | 2021/08/01 06:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | W | 4-3 |
| Japan NPB Reserve League | 2021/07/30 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | D | 4-4 |
| Japan NPB Reserve League | 2020/11/22 03:30 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | W | 9-4 |
| Japan NPB Reserve League | 2020/08/12 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | D | 0-0 |
| Japan NPB Reserve League | 2020/08/11 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | L | 0-7 |
| Japan NPB Reserve League | 2020/06/28 04:00 | Seibu Lions Reserves v Chiba Lotte Marines Reserves | D | 0-0 |
| Baseball Matches | 2020/03/27 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | W | 5-4 |
| Japan NPB Reserve League | 2021/11/01 03:30 | Hanshin Tigers Reserves v Chiba Lotte Marines Reserves | L | 10-2 |
| Japan NPB Reserve League | 2021/09/20 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | D | 0-0 |
| Japan NPB Reserve League | 2021/08/18 07:00 | Chiba Lotte Marines Reserves v Yomiuri Giants Reserves | L | 1-10 |
| Japan NPB Reserve League | 2021/08/17 07:00 | Chiba Lotte Marines Reserves v Yomiuri Giants Reserves | L | 0-2 |
| Japan NPB Reserve League | 2021/08/01 06:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | W | 4-3 |
| Japan NPB Reserve League | 2021/07/30 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | D | 4-4 |
| Japan NPB Reserve League | 2021/07/29 04:00 | Yomiuri Giants Reserves v Chiba Lotte Marines Reserves | W | 5-6 |
| Japan NPB Reserve League | 2021/07/22 04:00 | Chiba Lotte Marines Reserves v Nipponham Fighters Reserves | W | 4-3 |
| Japan NPB Reserve League | 2021/11/01 02:00 | Hiroshima Carp Reserves v Seibu Lions Reserves | L | 4-2 |
| Japan NPB Reserve League | 2021/10/28 03:26 | Hanshin Tigers Reserves v Seibu Lions Reserves | L | 9-1 |
| Japan NPB Reserve League | 2021/10/27 03:30 | Yomiuri Giants Reserves v Seibu Lions Reserves | L | 4-1 |
| Japan NPB Reserve League | 2021/10/03 04:00 | Yomiuri Giants Reserves v Seibu Lions Reserves | L | 5-1 |
| Japan NPB Reserve League | 2021/09/20 04:00 | Chiba Lotte Marines Reserves v Seibu Lions Reserves | D | 0-0 |
| Japan NPB Reserve League | 2021/09/13 08:45 | Rakuten Eagles Reserves v Seibu Lions Reserves | W | 1-4 |
| Japan NPB Reserve League | 2021/09/11 04:00 | Rakuten Eagles Reserves v Seibu Lions Reserves | W | 0-2 |
| Japan NPB Reserve League | 2021/09/05 04:00 | Seibu Lions Reserves v Yomiuri Giants Reserves | W | 7-3 |