Stadium: Dusit Center Round: 25 Ground: Hardcourt outdoor
| ITF M15 Cancun | 2021/12/13 17:00 | Nikolay Sysoev v Ren Nakamura | 2-6,6-2,10-3 |
| ITF M15 Cancun | 2021/12/08 15:10 | Arklon H D Pino v Ren Nakamura | 6-4,6-3 |
| ITF M15 Cancun | 2021/12/07 16:00 | Alan Sau Franco v Ren Nakamura | 7-6,6-3 |
| ITF M15 Cancun | 2021/12/05 17:00 | Felipe Santamaria v Ren Nakamura | 2-6,3-6 |
| ITF M15 Cancun | 2021/12/02 16:00 | Kiranpal Pannu v Ren Nakamura | 6-2,6-4 |
| ITF M15 Cancun | 2021/11/30 16:00 | Ren Nakamura v Joshua Sheehy | 6-7,0-6 |
| ITF M15 Cancun | 2021/11/29 14:00 | Masamichi Imamura v Ren Nakamura | 2-6,4-6 |
| ITF M15 Cancun | 2021/11/28 14:00 | Juan Sebastian Osorio v Ren Nakamura | 6-3,3-6,9-11 |
| ITF M15 Antalya | 2022/02/08 07:00 | Mircea-Alexandru Jecan v Ji Sung Nam | 7-6,6-2 |
| ITF M15 Antalya | 2022/02/04 09:00 | Evgeny Tyurnev v Ji Sung Nam | 6-1,6-2 |
| ITF M15 Antalya | 2022/01/21 10:55 | Ji Sung Nam v Davide Galoppini | 6-7,3-6 |
| ITF M15 Antalya | 2022/01/20 15:00 | Ji Sung Nam v Maciej Rajski | 7-6,1-6,10-8 |
| ITF M15 Antalya | 2022/01/19 14:40 | Ji Sung Nam v Grigoriy Lomakin | 6-1,6-2 |
| ITF M15 Antalya | 2022/01/13 07:10 | Jorge Martinez Martinez v Ji Sung Nam | 6-7,6-2,13-11 |
| Challenger Columbus | 2021/09/22 14:00 | Ji Sung Nam v Alex Bolt | 6-7,4-6 |
| Challenger Columbus | 2021/09/21 14:00 | Yunseong Chung v Ji Sung Nam | 6-3,4-6,6-7 |