| Challenger Busan Qual | 2017/05/13 05:50 | Yunseong Chung v Seong-Gook Oh | 6-4,6-7,3-6 |
| Challenger Seoul | 2017/05/10 03:30 | Yunseong Chung v Hiroki Moriya | 6-4,6-7,3-6 |
| Challenger Seoul | 2017/05/08 05:30 | Yen-Hsun Lu v Yunseong Chung | 3-6,4-6 |
| Challenger Gimcheon | 2017/05/01 04:25 | Brydan Klein v Yunseong Chung | 6-3,6-4 |
| Challenger Taipei Qual | 2017/04/16 06:50 | Toshihide Matsui v Yunseong Chung | 7-6,6-4 |
| ITF Japan F1 | 2017/03/07 02:35 | Yunseong Chung v Liang-Chi Huang | 3-6,6-7 |
| Challenger Yokohama Qual | 2017/02/25 04:50 | Yunseong Chung v Soonwoo Kwon | 6-7,5-7 |
| Challenger Kyoto Qual | 2017/02/18 05:25 | Yunseong Chung v Takuto Niki | 2-6,6-7 |
| ITF USA F5 | 2017/01/21 19:00 | Daniel Yoo v Fabiano De Paula | 6-1,3-6,6-7 |
| ITF USA F5 | 2017/01/20 21:00 | Dustin Goldenberg v Daniel Yoo | 0-6,1-6 |
| ITF USA F4 | 2017/01/14 17:00 | Grayson M. Goldin v Daniel Yoo | 6-1,6-4 |
| ITF USA F4 | 2017/01/13 23:00 | Maksim Bogdanovich v Daniel Yoo | 1-6,2-6 |
| ITF USA F3 | 2017/01/07 17:30 | Daniel Yoo v Gabriel Decamps | 6-3,3-6,3-6 |
| ITF USA F3 | 2017/01/06 17:00 | Daniel Yoo v Fletcher Scott | 6-1,6-1 |
| ITF Korea F8 | 2016/09/05 02:30 | Daniel Yoo v Min-Kyu Song | 2-6,4-6 |
| ITF Korea F7 | 2016/09/01 02:00 | Daniel Yoo v Min Hyeok Cho | 4-6,6-4,4-6 |