| Japan - NPB Reserve League | 2020/10/04 03:30 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2020/10/02 04:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | W | 6-4 |
| Japan - NPB Reserve League | 2020/09/12 04:00 | Seibu Lions - Reserves v Yomiuri Giants - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2020/09/11 04:00 | Seibu Lions - Reserves v Yomiuri Giants - Reserves | W | 5-7 |
| Japan - NPB Reserve League | 2020/08/23 04:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | W | 1-0 |
| 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 | 2020/10/28 04:00 | Rakuten Eagles - Reserves v Yomiuri Giants - Reserves | L | 7-0 |
| Japan - NPB Reserve League | 2020/10/27 04:00 | Rakuten Eagles - Reserves v Yomiuri Giants - Reserves | W | 7-8 |
| Japan - NPB Reserve League | 2020/10/18 04:00 | Nipponham Fighters - Reserves v Yomiuri Giants - Reserves | L | 6-2 |
| Japan - NPB Reserve League | 2020/10/04 03:30 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2020/10/02 04:00 | Yomiuri Giants - Reserves v Seibu Lions - Reserves | W | 6-4 |
| Japan - NPB Reserve League | 2020/10/01 04:00 | Rakuten Eagles - Reserves v Yomiuri Giants - Reserves | W | 2-4 |
| Japan - NPB Reserve League | 2020/09/30 04:00 | Rakuten Eagles - Reserves v Yomiuri Giants - Reserves | W | 4-6 |
| Japan - NPB Reserve League | 2020/09/29 04:00 | Rakuten Eagles - Reserves v Yomiuri Giants - Reserves | L | 12-5 |
| Japan - NPB Reserve League | 2020/10/25 03:30 | Yakult Swallows - Reserves v Seibu Lions - Reserves | W | 3-4 |
| Japan - NPB Reserve League | 2020/10/24 03:30 | Yakult Swallows - Reserves v Seibu Lions - Reserves | W | 0-5 |
| Japan - NPB Reserve League | 2020/10/23 03:30 | Yakult Swallows - Reserves v Seibu Lions - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2020/10/14 03:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | L | 10-1 |
| Japan - NPB Reserve League | 2020/10/13 03:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | D | 4-4 |
| Japan - NPB Reserve League | 2020/10/12 03:30 | Rakuten Eagles - Reserves v Seibu Lions - Reserves | L | 7-2 |
| Japan - NPB Reserve League | 2020/10/08 03:30 | Nipponham Fighters - Reserves v Seibu Lions - Reserves | D | 0-0 |
| Japan - NPB Reserve League | 2020/10/07 03:30 | Nipponham Fighters - Reserves v Seibu Lions - Reserves | L | 11-5 |