Face à face
| Japon - NPB | 2020/07/11 05:00 | Seibu Lions v Lotte Marines | L | 4-6 |
| Japon - NPB | 2020/07/10 09:00 | Seibu Lions v Lotte Marines | W | 7-6 |
| Japon - NPB | 2020/07/08 09:00 | Seibu Lions v Lotte Marines | W | 3-0 |
| Japon - NPB | 2020/07/07 09:00 | Seibu Lions v Lotte Marines | L | 6-8 |
| Japon - NPB - Exhibition | 2020/06/14 04:00 | Lotte Marines v Seibu Lions | W | 3-4 |
| Japon - NPB - Exhibition | 2020/06/13 05:00 | Lotte Marines v Seibu Lions | W | 2-3 |
| Japon - NPB - Exhibition | 2020/06/12 09:00 | Lotte Marines v Seibu Lions | W | 6-9 |
| Japon - NPB | 2019/09/24 09:15 | Seibu Lions v Lotte Marines | W | 12-4 |
Home History
| Japon - NPB | 2020/07/11 05:00 | Seibu Lions v Lotte Marines | L | 4-6 |
| Japon - NPB | 2020/07/10 09:00 | Seibu Lions v Lotte Marines | W | 7-6 |
| Japon - NPB | 2020/07/08 09:00 | Seibu Lions v Lotte Marines | W | 3-0 |
| Japon - NPB | 2020/07/07 09:00 | Seibu Lions v Lotte Marines | L | 6-8 |
| Japon - NPB | 2020/07/05 09:00 | Orix Buffaloes v Seibu Lions | L | 8-5 |
| Japon - NPB | 2020/07/04 09:00 | Orix Buffaloes v Seibu Lions | L | 4-3 |
| Japon - NPB | 2020/07/03 09:00 | Orix Buffaloes v Seibu Lions | D | 4-4 |
| Japon - NPB | 2020/07/02 09:00 | Orix Buffaloes v Seibu Lions | W | 5-9 |
Away History
| Japon - NPB | 2020/07/11 05:00 | Seibu Lions v Lotte Marines | W | 4-6 |
| Japon - NPB | 2020/07/10 09:00 | Seibu Lions v Lotte Marines | L | 7-6 |
| Japon - NPB | 2020/07/08 09:00 | Seibu Lions v Lotte Marines | L | 3-0 |
| Japon - NPB | 2020/07/07 09:00 | Seibu Lions v Lotte Marines | W | 6-8 |
| Japon - NPB | 2020/07/05 04:00 | Lotte Marines v Rakuten Eagles | L | 1-8 |
| Japon - NPB | 2020/07/04 05:00 | Lotte Marines v Rakuten Eagles | L | 1-3 |
| Japon - NPB | 2020/07/03 09:00 | Lotte Marines v Rakuten Eagles | L | 1-3 |
| Japon - NPB | 2020/07/02 09:00 | Lotte Marines v Rakuten Eagles | W | 8-5 |