Head to Head
| Japan NPB | 2021/04/11 05:00 | Seibu Lions v Lotte Marines | L | 2-1 |
| Japan NPB | 2021/04/10 05:00 | Seibu Lions v Lotte Marines | W | 2-6 |
| Japan NPB | 2021/04/09 08:45 | Seibu Lions v Lotte Marines | L | 7-4 |
| Japan NPB Exhibition | 2021/03/07 04:00 | Seibu Lions v Lotte Marines | L | 4-2 |
| Japan NPB Exhibition | 2021/03/06 04:00 | Seibu Lions v Lotte Marines | W | 0-4 |
| Japan NPB | 2020/11/08 04:00 | Seibu Lions v Lotte Marines | W | 2-8 |
| Japan NPB | 2020/10/22 09:00 | Lotte Marines v Seibu Lions | L | 4-7 |
| Japan NPB | 2020/10/21 09:00 | Lotte Marines v Seibu Lions | L | 1-2 |
Home History
| Japan NPB | 2021/04/25 04:00 | Softbank Hawks v Lotte Marines | W | 5-8 |
| Japan NPB | 2021/04/24 05:00 | Softbank Hawks v Lotte Marines | W | 9-11 |
| Japan NPB | 2021/04/23 08:45 | Softbank Hawks v Lotte Marines | L | 3-2 |
| Japan NPB | 2021/04/22 08:45 | Nippon Ham Fighters v Lotte Marines | L | 3-1 |
| Japan NPB | 2021/04/21 08:45 | Nippon Ham Fighters v Lotte Marines | W | 5-6 |
| Japan NPB | 2021/04/20 08:45 | Nippon Ham Fighters v Lotte Marines | W | 4-8 |
| Japan NPB | 2021/04/18 04:00 | Lotte Marines v Orix Buffaloes | W | 3-2 |
| Japan NPB | 2021/04/17 05:00 | Lotte Marines v Orix Buffaloes | W | 7-2 |
Away History
| Japan NPB | 2021/04/25 04:00 | Seibu Lions v Rakuten Eagles | L | 4-8 |
| Japan NPB | 2021/04/24 05:00 | Seibu Lions v Rakuten Eagles | L | 1-2 |
| Japan NPB | 2021/04/23 09:00 | Seibu Lions v Rakuten Eagles | D | 2-2 |
| Japan NPB | 2021/04/22 09:00 | Seibu Lions v Orix Buffaloes | L | 6-7 |
| Japan NPB | 2021/04/21 09:00 | Seibu Lions v Orix Buffaloes | L | 2-4 |
| Japan NPB | 2021/04/20 09:00 | Seibu Lions v Orix Buffaloes | L | 3-11 |
| Japan NPB | 2021/04/18 04:00 | Softbank Hawks v Seibu Lions | D | 4-4 |
| Japan NPB | 2021/04/17 08:45 | Softbank Hawks v Seibu Lions | L | 7-1 |