Head to Head
| Japan NPB | 2020/09/15 09:00 | Lotte Marines v Seibu Lions | L | 3-4 |
| Japan NPB | 2020/09/03 09:00 | Seibu Lions v Lotte Marines | W | 5-8 |
| Japan NPB | 2020/09/02 09:00 | Seibu Lions v Lotte Marines | L | 4-2 |
| Japan NPB | 2020/09/01 09:00 | Seibu Lions v Lotte Marines | L | 9-1 |
| Japan NPB | 2020/07/26 09:00 | Lotte Marines v Seibu Lions | L | 2-4 |
| Japan NPB | 2020/07/25 09:00 | Lotte Marines v Seibu Lions | W | 5-0 |
| Japan NPB | 2020/07/24 09:00 | Lotte Marines v Seibu Lions | L | 2-3 |
| Japan NPB | 2020/07/23 09:00 | Lotte Marines v Seibu Lions | L | 2-3 |
Home History
| Japan NPB | 2020/09/15 09:00 | Lotte Marines v Seibu Lions | L | 3-4 |
| Japan NPB | 2020/09/14 09:00 | Orix Buffaloes v Lotte Marines | W | 0-5 |
| Japan NPB | 2020/09/13 08:00 | Orix Buffaloes v Lotte Marines | W | 2-9 |
| Japan NPB | 2020/09/11 09:00 | Orix Buffaloes v Lotte Marines | W | 0-2 |
| Japan NPB | 2020/09/10 09:00 | Nippon Ham Fighters v Lotte Marines | L | 5-3 |
| Japan NPB | 2020/09/09 09:00 | Nippon Ham Fighters v Lotte Marines | W | 1-2 |
| Japan NPB | 2020/09/08 09:00 | Nippon Ham Fighters v Lotte Marines | W | 2-3 |
| Japan NPB | 2020/09/06 04:00 | Lotte Marines v Softbank Hawks | W | 4-2 |
Away History
| Japan NPB | 2020/09/15 09:00 | Lotte Marines v Seibu Lions | W | 3-4 |
| Japan NPB | 2020/09/13 04:00 | Seibu Lions v Softbank Hawks | W | 1-0 |
| Japan NPB | 2020/09/12 09:00 | Seibu Lions v Softbank Hawks | L | 4-8 |
| Japan NPB | 2020/09/11 09:00 | Seibu Lions v Softbank Hawks | L | 2-4 |
| Japan NPB | 2020/09/10 09:00 | Orix Buffaloes v Seibu Lions | L | 12-4 |
| Japan NPB | 2020/09/09 09:00 | Orix Buffaloes v Seibu Lions | W | 5-13 |
| Japan NPB | 2020/09/08 09:00 | Orix Buffaloes v Seibu Lions | W | 0-2 |
| Japan NPB | 2020/09/06 04:00 | Seibu Lions v Nippon Ham Fighters | W | 4-2 |