Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Qujing | 2019/07/13 02:30 | Jumpei Yamasaki v Yan Bai | 0-6,5-7 |
| ITF M25 Qujing | 2019/07/12 03:25 | Rio Noguchi v Jumpei Yamasaki | 3-6,2-6 |
| ITF M25 Qujing | 2019/07/11 03:50 | Jumpei Yamasaki v Makoto Ochi | 2-6,6-3,7-6 |
| ITF M25 Qujing | 2019/07/10 04:00 | Rui-Xuan Wang v Jumpei Yamasaki | 4-6,2-6 |
| ITF M25 Matsuyama | 2019/04/10 07:00 | Jumpei Yamasaki v Issei Okamura | 6-4,5-7,1-6 |
| ITF M15 Kashiwa | 2019/04/07 03:30 | Yuki Mochizuki v Jumpei Yamasaki | 2-6,6-2,2-6 |
| ITF M15 Kashiwa | 2019/04/05 01:00 | Cheong-Eui Kim v Jumpei Yamasaki | 4-6,6-3,4-6 |
| ITF M15 Kashiwa | 2019/04/04 01:00 | Issei Okamura v Jumpei Yamasaki | 3-6,2-6 |
| ITF M25 Taipei | 2019/07/16 02:00 | Kazuma Kawachi v Kousuke Ogura | 0-6,1-6 |
| ITF M15 Akishima | 2019/06/11 06:35 | Yuta Kawahashi v Kousuke Ogura | 6-0,6-0 |
| ITF M15 Karuizawa | 2019/05/29 05:15 | Kazuki Shimizu v Kousuke Ogura | 7-5,5-7,6-4 |
| ITF M25 Wuhan | 2019/05/07 03:15 | Cheng-Yu Yu v Kousuke Ogura | 6-4,6-3 |
| ITF M25 Wuhan | 2019/05/06 07:50 | Kousuke Ogura v Rimpei Kawakami | 6-4,6-4 |
| ITF M15 Wuhan | 2019/05/01 07:15 | Kuan-Yi Lee v Kousuke Ogura | 6-3,6-2 |
| ITF M15 Wuhan | 2019/04/30 02:00 | Shi Hong Zeng v Kousuke Ogura | 2-6,7-6,7-10 |
| ITF M15 Wuhan | 2019/04/29 03:45 | Wai Yu Kai v Kousuke Ogura | 3-6,4-6 |