Stadium: Court 1 Round: 46
| 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 |
| Challenger Busan Qual | 2017/05/13 05:10 | Daniel Nguyen v Felix Auger Aliassime | 7-5,6-1 |
| Challenger Soul | 2017/05/10 01:30 | Alexander Sarkissian v Daniel Nguyen | 6-3,6-4 |
| Challenger Seoul Qual | 2017/05/08 02:00 | Matthew Ebden v Daniel Nguyen | 2-6,0-6 |
| Challenger Seoul Qual | 2017/05/07 01:30 | Raymond Sarmiento v Daniel Nguyen | 6-3,6-7,2-6 |
| Challenger Seoul Qual | 2017/05/06 02:20 | Daniel Nguyen v Takuto Niki | 2-6,6-1,6-2 |
| Challenger Gimcheon Qual | 2017/04/29 01:00 | Daniel Nguyen v Bradley Mousley | 3-6,6-0,6-7 |
| Challenger Drummondville | 2017/03/16 21:40 | Daniel Nguyen v Blaz Rola | 2-6,1-6 |
| Challenger Drummondville | 2017/03/14 15:45 | Vincent Millot v Daniel Nguyen | 7-6,1-6,1-6 |