Stadium: Court 9 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Taipei | 2019/07/17 02:00 | Jumpei Yamasaki v Kousuke Ogura | 6-2,3-6,4-6 |
| ITF M25 Jakarta | 2023/08/15 04:20 | Sora Fukuda v Jumpei Yamasaki | 7-5,6-4 |
| ITF M25 Jakarta | 2023/08/08 02:30 | Jeamoon Lee v Jumpei Yamasaki | 6-0,7-5 |
| ITF M25 Daegu | 2023/06/09 02:55 | Jumpei Yamasaki v Dominik Palan | 4-6,2-6 |
| ITF M25 Daegu | 2023/06/06 03:10 | Duckhee Lee v Jumpei Yamasaki | 1-6,6-4,4-6 |
| ITF M15 Karuizawa | 2023/06/03 03:30 | Sanhui Shin v Jumpei Yamasaki | 6-3,7-6 |
| ITF M15 Karuizawa | 2023/06/01 02:40 | Jumpei Yamasaki v Takuya Kumasaka | 6-3,6-2 |
| ITF M15 Karuizawa | 2023/05/31 01:00 | Jumpei Yamasaki v Seita Watanabe | 6-4,6-4 |
| ITF M15 Karuizawa | 2023/05/30 02:00 | Jumpei Yamasaki v Daiki Yoshimura | 6-2,6-2 |
| Challenger Lima | 2023/08/20 18:20 | Sebastian Rodriguez v Kousuke Ogura | 6-4,7-5 |
| Challenger Santo Domingo | 2023/08/08 14:00 | Jorge Panta v Kousuke Ogura | 4-6,6-1,6-2 |
| ITF M15 Pittsburgh | 2023/07/27 15:00 | Kousuke Ogura v Felix Corwin | 6-2,5-7,1-6 |
| ITF M15 Pittsburgh | 2023/07/25 16:00 | Kousuke Ogura v Enrique Pena | 7-5,6-3 |
| ITF M15 Rochester | 2023/07/21 18:50 | Tyler Stice v Kousuke Ogura | 6-1,6-3 |
| ITF M15 Rochester | 2023/07/20 22:15 | Juan Sebastian Osorio v Kousuke Ogura | 3-6,1-6 |
| ITF M15 Lakewood | 2023/07/12 17:00 | Kousuke Ogura v Stefan Menichella | 6-4,6-7,2-6 |
| ITF M15 Irvine | 2023/06/28 17:00 | Kousuke Ogura v Lorenzo Claverie | 4-6,4-6 |