Stadium: Centre Court Round: 46
| Challenger Taipei Qual | 2018/04/07 03:05 | Tsung-Hao Huang v Yu, Cheng-Yu | 5-7,1-6 |
| ITF Japan F2 | 2018/03/13 02:10 | Yu, Cheng-Yu v Shintaro Imai | 7-6,3-6,2-6 |
| ITF Japan F1 | 2018/03/07 01:00 | Yu, Cheng-Yu v Kikuchi, Gengo | 5-7,5-7 |
| Coupe Davis | 2018/02/03 11:00 | Benjamin Hassan v Yu, Cheng-Yu | 5-7,6-3,6-4 |
| Indonesia F8, Singles | 2017/11/30 03:00 | Prashanth, N. Vijay Sundar v Yu, Cheng-Yu | 7-6,6-4 |
| Indonesia F8, Singles | 2017/11/29 04:00 | Yu, Cheng-Yu v Mukund Sasikumar | 6-2,6-7,7-5 |
| Indonesia F8, Singles | 2017/11/28 03:30 | Onoda, Ken v Yu, Cheng-Yu | 1-6,2-6 |
| ITF Indonesia F7 | 2017/11/22 04:40 | Duckhee Lee v Yu, Cheng-Yu | 6-3,6-2 |
| Challenger Taipei Qual | 2018/04/07 02:00 | Grills, Jacob v Yunseong Chung | 6-3,2-6,6-2 |
| ITF Japan F5 | 2018/04/02 03:10 | Shintaro Imai v Grills, Jacob | 6-1,6-1 |
| ITF Japan F4 | 2018/03/30 01:00 | Renta Tokuda v Grills, Jacob | 6-3,6-2 |
| ITF Japan F4 | 2018/03/29 01:00 | Wang, Chuhan v Grills, Jacob | 6-2,3-6,4-6 |
| ITF Japan F4 | 2018/03/27 01:00 | Grills, Jacob v Sekiguchi, Shuichi | 7-6,4-6,6-3 |
| Challenger Qujing Qual | 2018/03/17 02:00 | Wang, Ruixuan v Grills, Jacob | 3-6,7-6,6-2 |
| Shenzhen, China, Qualifying | 2018/03/11 02:45 | Grills, Jacob v Yusuke Takahashi | 4-6,6-4,2-6 |
| Challenger Zhuhai Qual | 2018/03/04 03:45 | Grills, Jacob v Granollers, Gerard | 2-6,6-4,2-6 |