Stadium: Court 1 Round: 54
| Challenger Busan Qual | 2017/05/14 03:10 | Austin Krajicek v Frederik Nielsen | 6-3,6-2 |
| Challenger Seoul | 2017/05/11 02:00 | Austin Krajicek v Alexander Sarkissian | 1-6,2-6 |
| Challenger Seoul | 2017/05/10 01:30 | Austin Krajicek v Seong Chan Hong | 7-6,6-3 |
| Challenger Seoul Qual | 2017/05/08 03:30 | Lucas Miedler v Austin Krajicek | 6-7,3-6 |
| Challenger Seoul Qual | 2017/05/07 03:35 | Edward Corrie v Austin Krajicek | 2-6,4-6 |
| Challenger Seoul Qual | 2017/05/06 02:40 | Ki Su Jung v Austin Krajicek | 1-6,2-6 |
| Challenger Gimcheon | 2017/05/02 04:20 | Go Soeda v Austin Krajicek | 7-6,6-2 |
| Challenger Gimcheon Qual | 2017/05/01 02:00 | Austin Krajicek v Lloyd Glasspool | 6-4,5-7,6-4 |
| 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 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 |