Head to Head
| Japan NPB | 2020/10/21 09:00 | Lotte Marines v Seibu Lions | L | 1-2 |
| Japan NPB | 2020/10/20 09:00 | Lotte Marines v Seibu Lions | L | 1-2 |
| Japan NPB | 2020/10/04 04:00 | Seibu Lions v Lotte Marines | W | 1-8 |
| Japan NPB | 2020/10/03 05:00 | Seibu Lions v Lotte Marines | W | 3-6 |
| Japan NPB | 2020/10/02 09:00 | Seibu Lions v Lotte Marines | L | 1-0 |
| Japan NPB | 2020/09/17 09:00 | Lotte Marines v Seibu Lions | W | 8-1 |
| Japan NPB | 2020/09/16 09:00 | Lotte Marines v Seibu Lions | L | 1-3 |
| Japan NPB | 2020/09/15 09:00 | Lotte Marines v Seibu Lions | L | 3-4 |
Home History
| Japan NPB | 2020/10/21 09:00 | Lotte Marines v Seibu Lions | L | 1-2 |
| Japan NPB | 2020/10/20 09:00 | Lotte Marines v Seibu Lions | L | 1-2 |
| Japan NPB | 2020/10/18 04:00 | Nippon Ham Fighters v Lotte Marines | L | 5-2 |
| Japan NPB | 2020/10/16 09:00 | Nippon Ham Fighters v Lotte Marines | W | 1-5 |
| Japan NPB | 2020/10/15 09:00 | Rakuten Eagles v Lotte Marines | L | 6-0 |
| Japan NPB | 2020/10/14 09:00 | Rakuten Eagles v Lotte Marines | L | 4-1 |
| Japan NPB | 2020/10/13 09:00 | Rakuten Eagles v Lotte Marines | W | 3-4 |
| Japan NPB | 2020/10/11 04:00 | Lotte Marines v Softbank Hawks | L | 0-3 |
Away History
| 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 | 2020/10/18 04:00 | Orix Buffaloes v Seibu Lions | W | 2-3 |
| Japan NPB | 2020/10/17 05:00 | Orix Buffaloes v Seibu Lions | L | 4-1 |
| Japan NPB | 2020/10/16 09:00 | Orix Buffaloes v Seibu Lions | W | 1-2 |
| Japan NPB | 2020/10/15 09:00 | Seibu Lions v Nippon Ham Fighters | L | 3-8 |
| Japan NPB | 2020/10/14 09:00 | Seibu Lions v Nippon Ham Fighters | L | 2-7 |
| Japan NPB | 2020/10/13 09:00 | Seibu Lions v Nippon Ham Fighters | W | 7-0 |