Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| Challenger Busan | 2018/05/14 06:20 | Kaichi Uchida v Chan-Yeong Oh | 6-1,6-4 |
| ITF Hong Kong F6 | 2018/01/03 03:20 | Harri Heliovaara v Chan-Yeong Oh | 6-1,6-3 |
| ITF Hong Kong F6 | 2018/01/02 03:55 | Chan-Yeong Oh v Anthony Jackie Tang | 7-5,6-4 |
| ITF Hong Kong F5 | 2017/12/26 05:45 | Tung-Lin Wu v Chan-Yeong Oh | 6-2,7-6 |
| ITF Hong Kong F5 | 2017/12/24 02:00 | Chan-Yeong Oh v Yuto Sakai | 6-3,6-3 |
| ITF Hong Kong F5 | 2017/12/23 02:00 | Chan-Yeong Oh v Alec Adamson | 7-5,6-3 |
| ITF Hong Kong F4 | 2017/12/18 02:00 | Shao-Fan Liu v Chan-Yeong Oh | 7-6,6-2 |
| ITF Korea F4 | 2017/06/22 02:00 | Chan-Yeong Oh v Min-Kyu Song | 5-7,2-6 |
| ITF Vietnam F3 | 2018/05/15 03:00 | Ku Keon Kang v Paramveer Singh Bajwa | 2-6,6-7 |
| ITF Vietnam F2 | 2018/05/06 06:00 | Ku Keon Kang v Aaron Addison | 3-6,2-6 |
| ITF Vietnam F2 | 2018/05/05 07:00 | Ku Keon Kang v Artem Vu | 6-3,6-3 |
| Challenger Kaohsiung Qual | 2017/09/30 05:00 | Ku Keon Kang v Marinko Matosevic | 3-6,3-6 |
| ITF USA F31 | 2017/09/16 20:15 | Ku Keon Kang v Igor Sao Thiago | 3-6,6-2,7-5 |
| ITF USA F31 | 2017/09/15 17:00 | Gustavo De O Cruz v Ku Keon Kang | 3-6,6-4,2-6 |
| ITF USA F30 | 2017/09/08 20:30 | Ku Keon Kang v Austin Rapp | 4-6,2-6 |
| ITF Korea F5 | 2017/06/30 04:20 | Jae Hwan Kim v Ku Keon Kang | 6-2,1-6,7-6 |