Stadium: Court 1 Round: 25
| ITF Thailand F11 | 2017/12/05 08:45 | Daniiar Duldaev v Ji Hoon Son | 6-4,6-2 |
| ITF Thailand F11 Qual | 2017/12/04 04:40 | Ji Hoon Son v Jae Hwan Kim | 6-1,6-4 |
| ITF Thailand F11 Qual | 2017/12/03 03:00 | Yurii Dzhavakian v Ji Hoon Son | 2-6,6-2,1-6 |
| ITF Thailand F11 Qual | 2017/12/02 05:00 | Natthasith Kunsuwan v Ji Hoon Son | 3-6,4-6 |
| ITF Korea F5 | 2017/06/28 06:15 | Ji Hoon Son v Seong-Gook Oh | 5-7,1-6 |
| ITF Korea F3 | 2017/06/14 01:00 | Yunseong Chung v Ji Hoon Son | 7-6,6-4 |
| ITF Korea F2 | 2017/06/09 02:00 | Ji Hoon Son v Jeamoon Lee | 4-6,3-6 |
| ITF Korea F2 | 2017/06/08 01:00 | Yunseong Chung v Ji Hoon Son | 6-7,6-0,6-7 |
| Challenger Kaohsiung Qual | 2017/09/30 05:00 | Ku Keon Kang v Marinko Matosevic | 3-6,3-6 |
| ITF USA F31 | 2017/09/16 20:15 | Ku Keon Kang v Igor Sao Thiago | 3-6,6-2,7-5 |
| ITF USA F31 | 2017/09/15 17:00 | Gustavo De O Cruz v Ku Keon Kang | 3-6,6-4,2-6 |
| ITF USA F30 | 2017/09/08 20:30 | Ku Keon Kang v Austin Rapp | 4-6,2-6 |
| ITF Korea F5 | 2017/06/30 04:20 | Jae Hwan Kim v Ku Keon Kang | 6-2,1-6,7-6 |
| ITF Korea F5 | 2017/06/29 04:50 | Daniel Yoo v Ku Keon Kang | 3-6,3-6 |
| ITF Korea F3 | 2017/06/15 03:00 | Cheong-Eui Kim v Ku Keon Kang | 6-3,6-1 |
| ITF Korea F3 | 2017/06/14 05:25 | Hyun-Joon Kim v Ku Keon Kang | 6-3,3-6,5-7 |