Round: 26 Ground: Hardcourt outdoor
| ITF Korea F1 | 2017/05/31 05:40 | Daniel Nguyen v Jaeyoung Park | 6-3,6-1 |
| Challenger Shymkent Qual | 2017/05/22 05:00 | Daniel Nguyen v Evgeny Karlovskiy | 4-6,0-6 |
| Challenger Shymkent Qual | 2017/05/21 05:00 | Daniel Nguyen v Denis Matsukevich | 7-5,6-0 |
| Challenger Busan Qual | 2017/05/15 03:35 | Austin Krajicek v Daniel Nguyen | 6-1,6-3 |
| Challenger Busan Qual | 2017/05/14 05:45 | Ji Hoon Son v Daniel Nguyen | 1-6,5-7 |
| Challenger Busan Qual | 2017/05/13 05:10 | Daniel Nguyen v Felix Auger Aliassime | 7-5,6-1 |
| Challenger - Seoul | 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 |
| ITF Korea F1 | 2017/05/31 01:00 | Daniel Yoo v Jung-Woong Na | 3-6,3-6 |
| ITF Korea F8 | 2016/09/07 02:00 | Jung-Woong Na v Hong Chung | 6-2,4-6,1-6 |
| ITF Korea F7 | 2016/08/31 02:00 | Jung-Woong Na v Arata Onozawa | 6-7,5-7 |
| ITF Korea F7 | 2016/08/30 06:05 | Jung-Woong Na v Seungri Choi | 6-1,6-3 |
| ITF Korea F8 | 2016/08/22 02:30 | Jung-Woong Na v Hiromasa Oku | 4-6,6-1,6-0 |
| ITF Korea F1 | 2016/06/16 01:00 | Jung-Woong Na v Dylan Seong Kwan Kim | 4-6,6-3,6-7 |
| ITF Korea F1 | 2016/06/14 01:30 | Jung-Woong Na v Hyun-Woo Nam | 7-5,6-2 |
| ITF China F11 | 2015/07/21 03:20 | Jung-Woong Na v Tsung-Hua Yang | 5-7,4-6 |