Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| 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 Japan F4 | 2017/03/28 01:00 | Chan-Yeong Oh v Yuki Matsuo | 6-1,6-1 |
| Challenger Seoul | 2017/05/08 07:10 | Vasek Pospisil v Sadio Doumbia | 6-3,6-2 |
| Challenger Gimcheon | 2017/05/01 03:45 | Sadio Doumbia v Konstantin Kravchuk | 4-6,2-6 |
| Challenger Anning Qual | 2017/04/24 02:00 | Sadio Doumbia v Felix Auger Aliassime | 2-6,7-6,4-6 |
| Challenger Anning Qual | 2017/04/23 02:00 | Sadio Doumbia v Jackson Withrow | 6-1,6-4 |
| Challenger Qingdao | 2017/04/19 03:00 | Sadio Doumbia v Di Wu | 6-1,4-6,1-6 |
| Challenger Qingdao | 2017/04/17 04:10 | Sadio Doumbia v Yecong He | 6-1,6-3 |
| Challenger Quimper Qual | 2017/01/28 14:25 | Calvin Hemery v Sadio Doumbia | 6-4,6-2 |
| Challenger Bangkok 2 | 2017/01/11 04:40 | Janko Tipsarevic v Sadio Doumbia | 6-3,6-1 |