Head to Head
| Japón - NPB Exhibition | 2024/03/24 05:00 | Yakult Swallows v Seibu Lions | W | 5-3 |
| Japón - NPB Exhibition | 2024/03/23 09:00 | Yakult Swallows v Seibu Lions | W | 3-0 |
| Japón - NPB Exhibition | 2024/03/22 09:00 | Yakult Swallows v Seibu Lions | W | 3-2 |
| Japón - NPB | 2023/06/11 04:00 | Yakult Swallows v Seibu Lions | W | 3-2 |
| Japón - NPB | 2023/06/10 05:00 | Yakult Swallows v Seibu Lions | W | 2-0 |
| Japón - NPB | 2023/06/09 09:00 | Yakult Swallows v Seibu Lions | L | 1-2 |
| Japón - NPB | 2022/06/05 04:00 | Seibu Lions v Yakult Swallows | W | 3-5 |
| Japón - NPB | 2022/06/04 05:00 | Seibu Lions v Yakult Swallows | W | 2-3 |
| Japón - NPB | 2022/06/03 09:00 | Seibu Lions v Yakult Swallows | W | 0-1 |
| Japón - NPB Exhibition | 2022/03/21 04:00 | Yakult Swallows v Seibu Lions | L | 1-4 |
| Japón - NPB Exhibition | 2022/03/20 04:00 | Yakult Swallows v Seibu Lions | W | 2-1 |
| Japón - NPB Exhibition | 2022/03/19 04:00 | Yakult Swallows v Seibu Lions | L | 5-6 |
| Japón - NPB Exhibition | 2022/03/18 04:00 | Yakult Swallows v Seibu Lions | D | 1-1 |
| Japón - NPB | 2021/06/06 04:00 | Seibu Lions v Yakult Swallows | W | 6-9 |
| Japón - NPB | 2021/06/05 05:00 | Seibu Lions v Yakult Swallows | L | 6-3 |
| Japón - NPB | 2021/06/04 08:30 | Seibu Lions v Yakult Swallows | W | 1-10 |
| Japón - NPB Exhibition | 2021/03/21 04:00 | Yakult Swallows v Seibu Lions | L | 6-8 |
| Japón - NPB Exhibition | 2021/03/20 04:00 | Yakult Swallows v Seibu Lions | L | 1-2 |
| Japón - NPB Exhibition | 2020/03/15 04:00 | Seibu Lions v Yakult Swallows | L | 3-1 |
| Japón - NPB Exhibition | 2020/03/14 04:00 | Seibu Lions v Yakult Swallows | L | 1-0 |
| Japón - NPB Exhibition | 2020/03/13 04:00 | Seibu Lions v Yakult Swallows | L | 7-2 |
| Japón - NPB | 2019/06/16 04:00 | Yakult Swallows v Seibu Lions | L | 6-10 |
| Japón - NPB | 2019/06/15 05:00 | Yakult Swallows v Seibu Lions | W | 6-5 |
| Japón - NPB | 2019/06/14 09:00 | Yakult Swallows v Seibu Lions | L | 1-11 |
| Japan Pre-Season Friendlies | 2019/03/17 04:00 | Yakult Swallows v Seibu Lions | L | 5-7 |
| Japón - NPB | 2018/06/14 09:00 | Yakult Swallows v Seibu Lions | W | 6-4 |
| Japón - NPB | 2018/06/13 09:00 | Yakult Swallows v Seibu Lions | L | 4-7 |
| Japón - NPB | 2018/06/12 09:00 | Yakult Swallows v Seibu Lions | W | 3-1 |
| Japón - NPB | 2017/06/04 04:00 | Seibu Lions v Yakult Swallows | D | 8-8 |
| Japón - NPB | 2017/06/03 05:00 | Seibu Lions v Yakult Swallows | L | 11-2 |