Stadium: C Round: 25
| 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 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 Vietnam F3 | 2018/05/13 05:00 | Polkinghorne, Darren v Crnokrak, Alexander | 6-3,5-7,2-6 |
| ITF Vietnam F1 | 2018/04/28 06:00 | Bybel, Nicholas v Crnokrak, Alexander | 6-1,6-3 |
| ITF Australia F4 Qual | 2018/03/24 23:00 | Jesse Delaney v Crnokrak, Alexander | 6-7,6-4,6-4 |
| ITF Australia F3 Qual | 2018/03/19 00:00 | Crnokrak, Alexander v Jayden Court | 7-6,5-7,2-6 |
| ITF Australia F2 Qual | 2018/03/02 23:00 | Crnokrak, Alexander v Taylor, Jason | 3-6,3-6 |
| ITF Australia F1 | 2018/02/27 02:25 | Sookton-Eng, Chanchai v Crnokrak, Alexander | 6-1,6-4 |
| Challenger Canberra | 2018/01/09 00:00 | Crnokrak, Alexander v Geoffrey Blancaneaux | 1-6,2-6 |
| Open d'Australie Playoff Wilcard Australienne | 2017/12/12 23:00 | Alex Bolt v Crnokrak, Alexander | 6-1,6-3,6-3 |