Round: 25 Ground: Hardcourt outdoor
| Challenger Busan | 2017/05/15 08:00 | Chan-Yeong Oh v Sadio Doumbia | 6-2,2-6,2-6 |
| Challenger Seoul Qual | 2017/05/07 01:30 | Chan-Yeong Oh v Luke Saville | 2-6,4-6 |
| Challenger Seoul Qual | 2017/05/06 01:00 | Chan-Yeong Oh v Hyeong Jin Cho | 6-1,6-2 |
| Challenger Gimcheon Qual | 2017/04/30 02:50 | Chan-Yeong Oh v Hubert Hurkacz | 0-6,3-6 |
| Challenger Gimcheon Qual | 2017/04/29 03:50 | Hangyeom Kim v Chan-Yeong Oh | 2-6,3-6 |
| ITF Japan F5 | 2017/04/05 02:50 | Chan-Yeong Oh v Takuto Niki | 4-6,6-3,2-6 |
| ITF Japan F5 | 2017/04/03 02:25 | Masamichi Imamura v Chan-Yeong Oh | 6-7,6-4,3-6 |
| ITF Japan F4 | 2017/03/29 05:30 | Chan-Yeong Oh v Yuichi Ito | 4-6,1-6 |
| ITF Korea F1 Qual | 2017/05/29 04:20 | Seong-Gook Oh v Woo Hyeok Jang | 2-6,3-6 |
| ITF Korea F1 Qual | 2017/05/28 06:30 | Woo Hyeok Jang v Hyung-Chan Lim | 6-2,6-3 |
| ITF Korea F8 | 2016/08/29 01:30 | Woo Hyeok Jang v Jeamoon Lee | 6-7,5-7 |
| ITF Korea F8 | 2016/08/28 02:00 | Keisuke Numajiri v Woo Hyeok Jang | 3-6,1-6 |
| ITF Korea F8 | 2016/08/27 02:00 | Woo Hyeok Jang v Woo-Ram Kim | 6-2,6-3 |
| ITF Korea F8 | 2016/08/21 04:30 | Sanhui Shin v Woo Hyeok Jang | 7-5,6-3 |
| ITF Korea F1 Qual | 2016/06/11 01:00 | Dylan Seong Kwan Kim v Woo Hyeok Jang | 6-3,6-3 |