Stadium: Court 4 Round: 25
| ITF Korea F2 | 2018/06/14 02:30 | Cheng-Yu Yu v Jae Hwan Kim | 1-6,5-7 |
| ITF Singapore F3 | 2018/05/28 05:00 | Cheng-Yu Yu v Jacob Grills | 7-6,3-6,3-6 |
| ITF Singapore F2 | 2018/05/22 03:35 | Blake Ellis v Cheng-Yu Yu | 6-3,6-4 |
| ITF Vietnam F3 | 2018/05/18 03:00 | Cheng-Yu Yu v Pruchya Isarow | 6-3,3-6,5-7 |
| ITF Vietnam F3 | 2018/05/17 03:00 | Cheng-Yu Yu v Alexios Halebian | 6-4,6-2 |
| ITF Vietnam F3 | 2018/05/16 03:00 | Cheng-Yu Yu v Gengo Kikuchi | 6-3,6-1 |
| ITF Vietnam F3 | 2018/05/15 04:35 | Cheng-Yu Yu v Alexander Crnokrak | 6-2,6-1 |
| Challenger Taipei Qual | 2018/04/08 03:00 | Cheng-Yu Yu v Jacob Grills | 6-4,5-7,3-6 |
| ITF Korea F2 | 2018/06/15 03:20 | Chan-Yeong Oh v Yunseong Chung | 6-7,6-3,4-6 |
| ITF Korea F2 | 2018/06/14 01:00 | Chan-Yeong Oh v Mitchell Thomas McDaniels | 6-2,3-6,6-3 |
| ITF Korea F2 | 2018/06/13 06:45 | Hong Chung v Chan-Yeong Oh | 2-6,2-6 |
| ITF Korea F2 | 2018/06/11 03:30 | Chan-Yeong Oh v Sang Yeop Kim | 6-3,6-3 |
| ITF Korea F1 | 2018/06/07 01:00 | Chan-Yeong Oh v Tae-Woo Lee | 4-6,2-6 |
| ITF Korea F1 | 2018/06/05 01:00 | Chan-Yeong Oh v Ku Keon Kang | 6-4,6-4 |
| 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 |