Head to Head
| Japan - NPB | 2018/06/12 09:00 | Yakult Swallows v Seibu Lions | W | 3-1 |
| Japan - NPB | 2017/06/04 04:00 | Seibu Lions v Yakult Swallows | D | 8-8 |
| Japan - NPB | 2017/06/03 05:00 | Seibu Lions v Yakult Swallows | L | 11-2 |
| Japan - NPB | 2017/06/02 09:00 | Seibu Lions v Yakult Swallows | L | 3-2 |
| Japan - NPB | 2016/06/19 04:00 | Yakult Swallows v Seibu Lions | L | 5-7 |
| Japan - NPB | 2016/06/18 05:00 | Yakult Swallows v Seibu Lions | W | 5-4 |
| Japan - NPB | 2016/06/17 09:00 | Yakult Swallows v Seibu Lions | W | 5-1 |
| Japan - NPB | 2015/06/14 04:00 | Seibu Lions v Yakult Swallows | L | 3-2 |
Home History
| Japan - NPB | 2018/06/12 09:00 | Yakult Swallows v Seibu Lions | W | 3-1 |
| Japan - NPB | 2018/06/10 04:00 | Orix Buffaloes v Yakult Swallows | W | 5-9 |
| Japan - NPB | 2018/06/09 05:00 | Orix Buffaloes v Yakult Swallows | W | 3-7 |
| Japan - NPB | 2018/06/08 09:00 | Orix Buffaloes v Yakult Swallows | L | 3-0 |
| Japan - NPB | 2018/06/07 09:00 | Softbank Hawks v Yakult Swallows | W | 3-4 |
| Japan - NPB | 2018/06/05 09:00 | Softbank Hawks v Yakult Swallows | W | 6-12 |
| Japan - NPB | 2018/06/03 04:00 | Yakult Swallows v Rakuten Eagles | W | 3-2 |
| Japan - NPB | 2018/06/02 05:00 | Yakult Swallows v Rakuten Eagles | W | 3-2 |
Away History
| Japan - NPB | 2018/06/12 09:00 | Yakult Swallows v Seibu Lions | L | 3-1 |
| Japan - NPB | 2018/06/10 05:00 | Seibu Lions v Yomiuri Giants | L | 2-3 |
| Japan - NPB | 2018/06/09 09:00 | Seibu Lions v Yomiuri Giants | L | 5-8 |
| Japan - NPB | 2018/06/08 09:00 | Seibu Lions v Yomiuri Giants | W | 5-4 |
| Japan - NPB | 2018/06/07 09:00 | Seibu Lions v Yokohama Bay Stars | W | 9-7 |
| Japan - NPB | 2018/06/05 09:00 | Seibu Lions v Yokohama Bay Stars | W | 8-1 |
| Japan - NPB | 2018/06/03 04:00 | Hanshin Tigers v Seibu Lions | W | 5-10 |
| Japan - NPB | 2018/06/02 05:00 | Hanshin Tigers v Seibu Lions | L | 10-5 |