Round: 25 Ground: Hardcourt outdoor
| Challenger Busan Qual | 2017/05/14 05:45 | Ji Hoon Son v Daniel Nguyen | 1-6,5-7 |
| Challenger Busan Qual | 2017/05/13 03:30 | Ji Hoon Son v Jay Clarke | 7-6,6-4 |
| Challenger Seoul Qual | 2017/05/06 01:00 | Ji Hoon Son v Luke Saville | 3-6,4-6 |
| Challenger Gimcheon Qual | 2017/04/29 01:00 | Max Purcell v Ji Hoon Son | 6-1,6-3 |
| ITF Korea F8 | 2016/09/06 04:30 | Jeamoon Lee v Ji Hoon Son | 6-3,6-4 |
| ITF Korea F8 | 2016/08/23 01:30 | Ji Hoon Son v Yong-Kyu Lim | 1-6,4-6 |
| ITF Korea F1 | 2016/06/15 05:35 | Min Hyeok Cho v Ji Hoon Son | 6-1,6-0 |
| ITF Korea F1 | 2015/05/19 03:00 | Ji Hoon Son v Dong-Kyu Lee | 6-1,4-6,2-6 |
| ITF Korea F1 Qual | 2017/05/29 05:10 | Tae-Woo Lee v Seong Jae Han | 3-6,6-1,7-5 |
| ITF Korea F1 Qual | 2017/05/28 06:30 | Tae-Woo Lee v Hyun Sik Go | 6-3,6-0 |
| ITF Korea F8 | 2016/09/06 01:30 | Tae-Woo Lee v Hong Chung | 6-7,1-6 |
| ITF Korea F7 | 2016/08/31 03:30 | Woong-Sun Jun v Tae-Woo Lee | 6-4,3-6,7-6 |
| ITF Korea F7 | 2016/08/29 02:30 | Tae-Woo Lee v Young Seok Kim | 6-2,6-3 |
| ITF Korea F8 | 2016/08/21 04:30 | Tae-Woo Lee v Ku Keon Kang | 0-6,6-7 |
| ITF Korea F8 | 2016/08/20 05:00 | Seoung Hun Lee v Tae-Woo Lee | 2-6,4-6 |