Head to Head
| 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 |
Home History
| Japan NPB | 2020/10/02 09:00 | Seibu Lions v Lotte Marines | W | 1-0 |
| Japan NPB | 2020/10/01 09:00 | Seibu Lions v Orix Buffaloes | W | 7-6 |
| Japan NPB | 2020/09/30 09:00 | Seibu Lions v Orix Buffaloes | L | 0-5 |
| Japan NPB | 2020/09/29 09:00 | Seibu Lions v Orix Buffaloes | L | 0-3 |
| Japan NPB | 2020/09/27 04:00 | Rakuten Eagles v Seibu Lions | W | 2-6 |
| Japan NPB | 2020/09/26 05:00 | Rakuten Eagles v Seibu Lions | W | 1-5 |
| Japan NPB | 2020/09/25 09:00 | Rakuten Eagles v Seibu Lions | W | 4-5 |
| Japan NPB | 2020/09/24 09:00 | Nippon Ham Fighters v Seibu Lions | L | 12-2 |
Away History
| Japan NPB | 2020/10/02 09:00 | Seibu Lions v Lotte Marines | L | 1-0 |
| Japan NPB | 2020/10/01 09:00 | Lotte Marines v Nippon Ham Fighters | L | 2-3 |
| Japan NPB | 2020/09/30 09:00 | Lotte Marines v Nippon Ham Fighters | W | 2-1 |
| Japan NPB | 2020/09/29 09:00 | Lotte Marines v Nippon Ham Fighters | W | 4-3 |
| Japan NPB | 2020/09/27 04:00 | Softbank Hawks v Lotte Marines | W | 4-8 |
| Japan NPB | 2020/09/26 05:00 | Softbank Hawks v Lotte Marines | L | 7-3 |
| Japan NPB | 2020/09/25 09:00 | Softbank Hawks v Lotte Marines | W | 4-7 |
| Japan NPB | 2020/09/24 09:00 | Lotte Marines v Rakuten Eagles | L | 0-3 |