| 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 |
| 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 Busan Qual | 2017/05/15 02:00 | Jeamoon Lee v Raymond Sarmiento | 2-6,4-6 |
| Challenger Busan Qual | 2017/05/13 02:00 | Young Seok Kim v Jeamoon Lee | 3-6,3-6 |
| Challenger Gimcheon | 2017/05/02 03:50 | Thomas Fabbiano v Jeamoon Lee | 6-0,6-1 |
| ITF Japan F3 | 2017/03/24 01:00 | Shane Vinsant v Jeamoon Lee | 6-2,7-5 |
| ITF Japan F3 | 2017/03/23 01:30 | Yusuke Takahashi v Jeamoon Lee | 3-6,1-6 |
| ITF Japan F3 | 2017/03/22 04:45 | Jumpei Yamasaki v Jeamoon Lee | 6-7,3-6 |
| ITF Japan F3 | 2017/03/20 04:00 | Jeamoon Lee v Yosuke Watanuki | 6-3,2-6,6-0 |
| ITF Japan F3 | 2017/03/19 01:00 | Jeamoon Lee v Katsuki Nagao | 7-6,6-4 |