| Japan - NPB Reserve League | 2020/08/21 04:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2020/07/16 04:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | L | 2-4 |
| Japan - NPB Reserve League | 2020/07/15 04:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | D | 3-3 |
| Japan - NPB Reserve League | 2019/07/06 07:00 | Seibu Lions - Reserves v Yomiuri Giants - Reserves | L | 5-0 |
| Japan - NPB Reserve League | 2019/07/05 07:00 | Seibu Lions - Reserves v Yomiuri Giants - Reserves | L | 3-1 |
| Japan - NPB Reserve League | 2019/06/16 04:00 | Seibu Lions - Reserves v Yomiuri Giants - Reserves | L | 9-4 |
| Japan - NPB Reserve League | 2020/08/21 04:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2020/08/12 04:00 | Yomiuri Giants - Reserves v Nipponham Fighters - Reserves | W | 8-5 |
| Japan - NPB Reserve League | 2020/08/11 04:00 | Yomiuri Giants - Reserves v Nipponham Fighters - Reserves | W | 10-9 |
| Japan - NPB Reserve League | 2020/07/26 04:00 | Chiba Lotte Marines - Reserves v Yomiuri Giants - Reserves | W | 1-2 |
| Japan - NPB Reserve League | 2020/07/24 07:00 | Chiba Lotte Marines - Reserves v Yomiuri Giants - Reserves | W | 2-3 |
| Japan - NPB Reserve League | 2020/07/22 07:00 | Yokohama Bay Stars - Reserves v Yomiuri Giants - Reserves | W | 1-6 |
| Japan - NPB Reserve League | 2020/07/21 04:00 | Yokohama Bay Stars - Reserves v Yomiuri Giants - Reserves | L | 6-4 |
| Japan - NPB Reserve League | 2020/07/19 04:00 | Chiba Lotte Marines - Reserves v Yomiuri Giants - Reserves | W | 1-2 |
| Japan - NPB Reserve League | 2020/08/21 04:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2020/08/12 04:00 | Chiba Lotte Marines - Reserves v Seibu Lions - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2020/08/11 04:00 | Chiba Lotte Marines - Reserves v Seibu Lions - Reserves | W | 0-7 |
| Japan - NPB Reserve League | 2020/08/09 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | W | 1-7 |
| Japan - NPB Reserve League | 2020/08/07 04:00 | Yakult Swallows - Reserves v Seibu Lions - Reserves | W | 0-5 |
| Japan - NPB Reserve League | 2020/07/28 04:00 | Nipponham Fighters - Reserves v Seibu Lions - Reserves | W | 5-8 |
| Japan - NPB Reserve League | 2020/07/24 04:30 | Yokohama Bay Stars - Reserves v Seibu Lions - Reserves | L | 4-3 |
| Japan - NPB Reserve League | 2020/07/16 04:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | W | 2-4 |