Stadium: Court 4 Round: 25
| ITF Singapore F3 | 2018/05/28 05:00 | Yu, Cheng-Yu v Grills, Jacob | 7-6,3-6,3-6 |
| ITF Singapore F2 | 2018/05/22 03:35 | Blake Ellis v Yu, Cheng-Yu | 6-3,6-4 |
| ITF Vietnam F3 | 2018/05/18 03:00 | Yu, Cheng-Yu v Isarow, Pruchya | 6-3,3-6,5-7 |
| ITF Vietnam F3 | 2018/05/17 03:00 | Yu, Cheng-Yu v Halebian, Alexios | 6-4,6-2 |
| ITF Vietnam F3 | 2018/05/16 03:00 | Yu, Cheng-Yu v Kikuchi, Gengo | 6-3,6-1 |
| ITF Vietnam F3 | 2018/05/15 04:35 | Yu, Cheng-Yu v Crnokrak, Alexander | 6-2,6-1 |
| Challenger Taipei Qual | 2018/04/08 03:00 | Yu, Cheng-Yu v Grills, Jacob | 6-4,5-7,3-6 |
| Challenger Taipei Qual | 2018/04/07 03:05 | Tsung-Hao Huang v Yu, Cheng-Yu | 5-7,1-6 |
| ITF Korea F1 | 2018/06/10 03:00 | Lim, Yong-Kyu v Jeamoon Lee | 6-4,7-6 |
| ITF Korea F1 | 2018/06/09 01:00 | Kim, Cheong-Eui v Lim, Yong-Kyu | 2-6,3-6 |
| ITF Korea F1 | 2018/06/08 02:00 | Nam, Ji Sung v Lim, Yong-Kyu | 1-6,2-6 |
| ITF Korea F1 | 2018/06/07 02:35 | Park, Minjong v Lim, Yong-Kyu | 5-7,1-6 |
| ITF Korea F1 | 2018/06/06 03:20 | Lim, Yong-Kyu v Song, Min-Kyu | 4-6,6-4,6-1 |
| Challenger Busan Qual | 2018/05/12 04:05 | Lim, Yong-Kyu v Wishaya Trongcharoenchaikul | 7-6,6-7,2-6 |
| Challenger Gimcheon Qual | 2018/05/06 04:30 | Lim, Yong-Kyu v Wishaya Trongcharoenchaikul | 6-2,6-7,4-6 |
| Challenger Gimcheon Qual | 2018/05/05 01:30 | Lim, Yong-Kyu v Hsieh, Cheng-Peng | 6-4,6-3 |