Stadium: Center Court Round: 25 Ground: Hardcourt outdoor
| Challenger Gwangju Qual | 2017/09/17 01:30 | Tsung-Hua Yang v Yunseong Chung | 7-6,7-5 |
| ITF China F2 | 2015/04/09 02:00 | Yunseong Chung v Tsung-Hua Yang | 3-6,2-6 |
| Challenger Gwangju | 2017/09/24 01:50 | Matthias Bachinger v Tsung-Hua Yang | 6-3,6-4 |
| Challenger Gwangju | 2017/09/23 04:05 | Tsung-Hua Yang v Peter Polansky | 6-4,5-7,6-2 |
| Challenger Gwangju | 2017/09/22 06:25 | Tsung-Hua Yang v Marinko Matosevic | 6-1,7-6 |
| Challenger Gwangju | 2017/09/20 03:50 | Rubin Statham v Tsung-Hua Yang | 7-6,5-7,1-6 |
| Challenger Gwangju | 2017/09/19 01:30 | Shuichi Sekiguchi v Tsung-Hua Yang | 5-7,6-7 |
| Challenger Gwangju Qual | 2017/09/18 01:30 | Tsung-Hua Yang v Miliaan Niesten | 0-6,6-1,6-3 |
| Challenger Gwangju Qual | 2017/09/17 01:30 | Tsung-Hua Yang v Yunseong Chung | 7-6,7-5 |
| Challenger Shanghai Qual | 2017/09/11 02:00 | Tsung-Hua Yang v Bradley Mousley | 6-7,6-3,6-7 |
| Challenger Gwangju Qual | 2017/09/17 01:30 | Tsung-Hua Yang v Yunseong Chung | 7-6,7-5 |
| Challenger Gwangju Qual | 2017/09/16 01:30 | Yunseong Chung v Seong Taek Im | 6-1,7-6 |
| Challenger Shanghai Qual | 2017/09/09 02:00 | Yunseong Chung v Zhicheng Zhu | 6-3,6-1 |
| Challenger Chengdu | 2017/08/03 03:00 | Yunseong Chung v Nikola Milojevic | 6-7,4-6 |
| Challenger Chengdu | 2017/08/01 02:00 | Yunseong Chung v Shuichi Sekiguchi | 4-6,6-3,7-5 |
| Challenger Chengdu Qual | 2017/07/30 03:00 | Vishnu Vardhan v Yunseong Chung | 4-6,3-6 |
| Challenger Chengdu Qual | 2017/07/29 03:55 | Sergey Betov v Yunseong Chung | 2-6,6-7 |
| ITF China F14 | 2017/07/25 03:35 | Yunseong Chung v Jie Cui | 3-6,5-7 |