| ITF Corea F2 | 2018/06/13 04:45 | Ji Hoon Son v Ku Keon Kang | 6-1,6-4 |
| ITF Corea F1 | 2018/06/06 01:00 | Jung-Woong Na v Ji Hoon Son | 6-4,6-7,6-4 |
| ITF Vietnam F3 | 2018/05/18 03:00 | Ji Hoon Son v Ji Sung Nam | 1-6,2-6 |
| ITF Vietnam F3 | 2018/05/16 03:00 | Ji Hoon Son v Gary Kushnirovich | 4-6,7-6,6-1 |
| ITF Vietnam F3 | 2018/05/15 03:00 | Nam Hoang Ly v Ji Hoon Son | 1-6,4-6 |
| ITF Vietnam F2 | 2018/05/08 03:00 | Nam Hoang Ly v Ji Hoon Son | 3-6,7-5,6-0 |
| ITF Vietnam F2 | 2018/05/06 04:00 | Ji Hoon Son v Sang-Woo Noh | 6-2,6-1 |
| Challenger de Seúl | 2018/05/03 08:30 | Jordan Thompson v Ji Hoon Son | 7-5,7-6 |
| ITF Corea F2 | 2018/06/13 04:55 | Takuto Niki v Min-Kyu Song | 3-6,7-5,6-3 |
| ITF Corea F1 | 2018/06/09 02:35 | Takuto Niki v Jeamoon Lee | 3-6,6-4,4-6 |
| ITF Corea F1 | 2018/06/08 03:30 | Takuto Niki v Hong Chung | 6-1,6-0 |
| ITF Corea F1 | 2018/06/07 04:25 | Takuto Niki v Sang-Woo Noh | 6-3,6-2 |
| ITF Corea F1 | 2018/06/06 01:00 | Takuto Niki v Sang Yeop Kim | 6-0,6-0 |
| ITF Singapur F3 | 2018/05/29 04:05 | Takuto Niki v Congsup Congcar | 5-7,1-6 |
| ITF Singapur F2 | 2018/05/26 03:00 | Takuto Niki v Collin Altamirano | 6-7,3-6 |
| ITF Singapur F2 | 2018/05/24 03:00 | Daniel Nolan v Takuto Niki | 6-1,6-7,4-6 |