Head to Head
| Japan NPB | 2019/06/16 04:00 | Yakult Swallows v Seibu Lions | W | 6-10 |
| Japan NPB | 2019/06/15 05:00 | Yakult Swallows v Seibu Lions | L | 6-5 |
| Japan NPB | 2019/06/14 09:00 | Yakult Swallows v Seibu Lions | W | 1-11 |
| Japan Pre-Season Friendlies | 2019/03/17 04:00 | Yakult Swallows v Seibu Lions | W | 5-7 |
| Japan NPB | 2018/06/14 09:00 | Yakult Swallows v Seibu Lions | L | 6-4 |
| Japan NPB | 2018/06/13 09:00 | Yakult Swallows v Seibu Lions | W | 4-7 |
| Japan NPB | 2018/06/12 09:00 | Yakult Swallows v Seibu Lions | L | 3-1 |
| Japan NPB | 2017/06/04 04:00 | Seibu Lions v Yakult Swallows | D | 8-8 |
Home History
| Japan NPB Japan Series | 2019/10/13 05:00 | Seibu Lions v Softbank Hawks | L | 3-9 |
| Japan NPB | 2019/10/11 09:00 | Softbank Hawks v Seibu Lions | L | 7-0 |
| Japan NPB | 2019/10/10 09:00 | Softbank Hawks v Seibu Lions | L | 8-6 |
| Japan NPB | 2019/10/09 09:00 | Softbank Hawks v Seibu Lions | L | 8-4 |
| Japan NPB | 2019/09/26 09:00 | Seibu Lions v Rakuten Eagles | L | 1-7 |
| Japan NPB | 2019/09/24 09:15 | Seibu Lions v Lotte Marines | W | 12-4 |
| Japan NPB | 2019/09/23 04:00 | Seibu Lions v Rakuten Eagles | W | 5-3 |
| Japan NPB | 2019/09/22 05:00 | Seibu Lions v Rakuten Eagles | L | 5-7 |
Away History
| Japan NPB | 2019/09/28 09:00 | Yomiuri Giants v Yakult Swallows | W | 1-2 |
| Japan NPB | 2019/09/25 09:00 | Yakult Swallows v Chunichi Dragons | L | 0-12 |
| Japan NPB | 2019/09/23 09:00 | Yomiuri Giants v Yakult Swallows | L | 9-5 |
| Japan NPB | 2019/09/22 09:00 | Yomiuri Giants v Yakult Swallows | W | 3-10 |
| Japan NPB | 2019/09/21 09:00 | Chunichi Dragons v Yakult Swallows | L | 14-2 |
| Japan NPB | 2019/09/19 09:00 | Hanshin Tigers v Yakult Swallows | W | 0-8 |
| Japan NPB | 2019/09/18 09:00 | Yakult Swallows v Hanshin Tigers | L | 2-3 |
| Japan NPB | 2019/09/16 05:00 | Yakult Swallows v Hiroshima Carp | W | 6-4 |