Face à face
| Japon - NPB | 2021/09/25 05:00 | Lotte Marines v Seibu Lions | W | 3-1 |
| Japon - NPB | 2021/09/24 08:45 | Lotte Marines v Seibu Lions | L | 4-5 |
| Japon - NPB | 2021/09/01 08:45 | Seibu Lions v Lotte Marines | L | 14-7 |
| Japon - NPB | 2021/08/31 08:45 | Seibu Lions v Lotte Marines | W | 1-5 |
| Japon - NPB | 2021/08/19 08:45 | Seibu Lions v Lotte Marines | D | 3-3 |
| Japon - NPB | 2021/08/18 08:45 | Seibu Lions v Lotte Marines | W | 3-5 |
| Japon - NPB | 2021/08/17 08:45 | Seibu Lions v Lotte Marines | L | 8-2 |
| Japon - NPB | 2021/07/14 08:45 | Lotte Marines v Seibu Lions | L | 3-8 |
| Japon - NPB | 2021/07/13 08:45 | Lotte Marines v Seibu Lions | W | 7-6 |
| Japon - NPB | 2021/06/20 04:00 | Lotte Marines v Seibu Lions | D | 3-3 |
| Japon - NPB | 2021/06/19 05:00 | Lotte Marines v Seibu Lions | L | 2-7 |
| Japon - NPB | 2021/06/18 08:45 | Lotte Marines v Seibu Lions | W | 5-0 |
| Japon - NPB | 2021/05/16 05:00 | Seibu Lions v Lotte Marines | D | 6-6 |
| Japon - NPB | 2021/05/15 05:00 | Seibu Lions v Lotte Marines | L | 3-0 |
| Japon - NPB | 2021/05/14 08:45 | Seibu Lions v Lotte Marines | D | 4-4 |
| Japon - NPB | 2021/04/29 05:00 | Lotte Marines v Seibu Lions | W | 5-2 |
| Japon - NPB | 2021/04/28 08:45 | Lotte Marines v Seibu Lions | L | 2-3 |
| Japon - NPB | 2021/04/27 08:45 | Lotte Marines v Seibu Lions | L | 1-3 |
| Japon - NPB | 2021/04/11 05:00 | Seibu Lions v Lotte Marines | L | 2-1 |
| Japon - NPB | 2021/04/10 05:00 | Seibu Lions v Lotte Marines | W | 2-6 |
| Japon - NPB | 2021/04/09 08:45 | Seibu Lions v Lotte Marines | L | 7-4 |
| Japon - NPB - Exhibition | 2021/03/07 04:00 | Seibu Lions v Lotte Marines | L | 4-2 |
| Japon - NPB - Exhibition | 2021/03/06 04:00 | Seibu Lions v Lotte Marines | W | 0-4 |
| Japon - NPB | 2020/11/08 04:00 | Seibu Lions v Lotte Marines | W | 2-8 |
| Japon - NPB | 2020/10/22 09:00 | Lotte Marines v Seibu Lions | L | 4-7 |
| Japon - NPB | 2020/10/21 09:00 | Lotte Marines v Seibu Lions | L | 1-2 |
| Japon - NPB | 2020/10/20 09:00 | Lotte Marines v Seibu Lions | L | 1-2 |
| Japon - NPB | 2020/10/04 04:00 | Seibu Lions v Lotte Marines | W | 1-8 |
| Japon - NPB | 2020/10/03 05:00 | Seibu Lions v Lotte Marines | W | 3-6 |
| Japon - NPB | 2020/10/02 09:00 | Seibu Lions v Lotte Marines | L | 1-0 |