Stadium: Court 13 Round: 45
| ITF Korea F5 | 2017/06/28 06:15 | Ji Hoon Son v Seong-Gook Oh | 5-7,1-6 |
| ITF Turkey F5 | 2018/02/08 08:50 | Alessandro Petrone v Ji Hoon Son | 6-2,7-6 |
| ITF Turkey F5 | 2018/02/06 08:30 | Ji Hoon Son v Ji Sung Nam | 4-6,7-6,6-1 |
| ITF Turkey F5 | 2018/02/05 07:30 | Jacopo Berrettini v Ji Hoon Son | 5-7,4-6 |
| ITF Turkey F5 | 2018/02/04 07:30 | Hanyi Liu v Ji Hoon Son | 1-6,0-6 |
| ITF Turkey F4 | 2018/02/02 08:00 | Dragos Dima v Ji Hoon Son | 6-0,6-1 |
| ITF Turkey F4 | 2018/02/01 09:05 | Ji Hoon Son v Cheong-Eui Kim | 6-4,6-4 |
| ITF Turkey F4 | 2018/01/30 07:30 | Duje Kekez v Ji Hoon Son | 1-6,4-6 |
| ITF Turkey F4 | 2018/01/29 08:00 | Sergio Luis H Ramirez v Ji Hoon Son | 2-6,3-6 |
| ITF China F1 | 2018/01/11 02:30 | Seong-Gook Oh v Shinji Hazawa | 3-6,4-6 |
| ITF China F1 | 2018/01/08 03:05 | Seong-Gook Oh v Yuanfeng Li | 7-6,6-2 |
| Challenger Toyota Qual | 2017/11/11 00:30 | Seong-Gook Oh v Yuya Kibi | 3-6,1-6 |
| ITF India F8 | 2017/09/15 04:30 | Seong-Gook Oh v Colin Van Beem | 6-7,6-1,4-6 |
| ITF India F8 | 2017/09/14 05:00 | Seong-Gook Oh v Clement Larriere | 6-0,1-6,6-4 |
| ITF India F8 | 2017/09/13 07:00 | Jui-Chen Hung v Seong-Gook Oh | 2-6,2-6 |
| ITF India F8 | 2017/09/11 08:25 | Seong-Gook Oh v S D Prajwal Dev | 2-6,6-4,6-1 |
| ITF India F7 | 2017/09/06 04:00 | Jayesh Pungliya v Seong-Gook Oh | 7-5,7-6 |