Head to Head
| Japan NPB | 2021/05/15 05:00 | Seibu Lions v Lotte Marines | W | 3-0 |
| Japan NPB | 2021/05/14 08:45 | Seibu Lions v Lotte Marines | D | 4-4 |
| Japan NPB | 2021/04/29 05:00 | Lotte Marines v Seibu Lions | L | 5-2 |
| Japan NPB | 2021/04/28 08:45 | Lotte Marines v Seibu Lions | W | 2-3 |
| Japan NPB | 2021/04/27 08:45 | Lotte Marines v Seibu Lions | W | 1-3 |
| Japan NPB | 2021/04/11 05:00 | Seibu Lions v Lotte Marines | W | 2-1 |
| Japan NPB | 2021/04/10 05:00 | Seibu Lions v Lotte Marines | L | 2-6 |
| Japan NPB | 2021/04/09 08:45 | Seibu Lions v Lotte Marines | W | 7-4 |
| Japan NPB Exhibition | 2021/03/07 04:00 | Seibu Lions v Lotte Marines | W | 4-2 |
| Japan NPB Exhibition | 2021/03/06 04:00 | Seibu Lions v Lotte Marines | L | 0-4 |
| Japan NPB | 2020/11/08 04:00 | Seibu Lions v Lotte Marines | L | 2-8 |
| Japan NPB | 2020/10/22 09:00 | Lotte Marines v Seibu Lions | W | 4-7 |
| Japan NPB | 2020/10/21 09:00 | Lotte Marines v Seibu Lions | W | 1-2 |
| Japan NPB | 2020/10/20 09:00 | Lotte Marines v Seibu Lions | W | 1-2 |
| Japan NPB | 2020/10/04 04:00 | Seibu Lions v Lotte Marines | L | 1-8 |
| Japan NPB | 2020/10/03 05:00 | Seibu Lions v Lotte Marines | L | 3-6 |
| Japan NPB | 2020/10/02 09:00 | Seibu Lions v Lotte Marines | W | 1-0 |
| Japan NPB | 2020/09/17 09:00 | Lotte Marines v Seibu Lions | L | 8-1 |
| Japan NPB | 2020/09/16 09:00 | Lotte Marines v Seibu Lions | W | 1-3 |
| Japan NPB | 2020/09/15 09:00 | Lotte Marines v Seibu Lions | W | 3-4 |
| Japan NPB | 2020/09/03 09:00 | Seibu Lions v Lotte Marines | L | 5-8 |
| Japan NPB | 2020/09/02 09:00 | Seibu Lions v Lotte Marines | W | 4-2 |
| Japan NPB | 2020/09/01 09:00 | Seibu Lions v Lotte Marines | W | 9-1 |
| Japan NPB | 2020/07/26 09:00 | Lotte Marines v Seibu Lions | W | 2-4 |
| Japan NPB | 2020/07/25 09:00 | Lotte Marines v Seibu Lions | L | 5-0 |
| Japan NPB | 2020/07/24 09:00 | Lotte Marines v Seibu Lions | W | 2-3 |
| Japan NPB | 2020/07/23 09:00 | Lotte Marines v Seibu Lions | W | 2-3 |
| Japan NPB | 2020/07/22 09:00 | Lotte Marines v Seibu Lions | L | 2-1 |
| Japan NPB | 2020/07/21 09:00 | Lotte Marines v Seibu Lions | W | 3-8 |
| Japan NPB | 2020/07/12 05:00 | Seibu Lions v Lotte Marines | W | 8-5 |