| Japan - NPB Reserve League | 2019/05/23 08:00 | Yakult Swallows - Reserves v Yokohama Bay Stars - Reserves | W | 1-4 |
| Japan - NPB Reserve League | 2019/06/16 04:00 | Chiba Lotte Marines - Reserves v Yokohama Bay Stars - Reserves | L | 3-0 |
| Japan - NPB Reserve League | 2019/05/31 09:00 | Seibu Lions - Reserves v Yokohama Bay Stars - Reserves | W | 1-4 |
| Japan - NPB Reserve League | 2019/05/28 09:00 | Yomiuri Giants - Reserves v Yokohama Bay Stars - Reserves | W | 7-8 |
| Japan - NPB Reserve League | 2019/05/25 04:00 | Yokohama Bay Stars - Reserves v Chiba Lotte Marines - Reserves | L | 0-4 |
| Japan - NPB Reserve League | 2019/05/24 04:00 | Yokohama Bay Stars - Reserves v Chiba Lotte Marines - Reserves | L | 8-11 |
| Japan - NPB Reserve League | 2019/05/23 08:00 | Yakult Swallows - Reserves v Yokohama Bay Stars - Reserves | W | 1-4 |
| Japan - NPB Reserve League | 2019/05/07 09:00 | Rakuten Eagles - Reserves v Yokohama Bay Stars - Reserves | W | 0-4 |
| Japan - NPB Reserve League | 2019/04/22 04:33 | Yokohama Bay Stars - Reserves v Rakuten Eagles - Reserves | W | 4-3 |
| Japan - NPB Reserve League | 2019/06/13 04:00 | Yakult Swallows - Reserves v Yomiuri Giants - Reserves | L | 6-9 |
| Japan - NPB Reserve League | 2019/06/12 04:00 | Yakult Swallows - Reserves v Yomiuri Giants - Reserves | W | 2-1 |
| Japan - NPB Reserve League | 2019/06/09 04:00 | Rakuten Eagles - Reserves v Yakult Swallows - Reserves | L | 4-1 |
| Japan - NPB Reserve League | 2019/05/23 08:00 | Yakult Swallows - Reserves v Yokohama Bay Stars - Reserves | L | 1-4 |
| Japan - NPB Reserve League | 2019/05/10 04:00 | Yakult Swallows - Reserves v Chiba Lotte Marines - Reserves | W | 9-6 |
| Japan - NPB Reserve League | 2019/05/07 04:00 | Seibu Lions - Reserves v Yakult Swallows - Reserves | D | 5-5 |