Stadium: C Round: 25
| Challenger Taipei Qual | 2018/04/08 03:00 | Cheng-Yu Yu v Jacob Grills | 6-4,5-7,3-6 |
| Challenger Taipei Qual | 2018/04/07 03:05 | Tsung-Hao Huang v Cheng-Yu Yu | 5-7,1-6 |
| ITF Japan F2 | 2018/03/13 02:10 | Cheng-Yu Yu v Shintaro Imai | 7-6,3-6,2-6 |
| ITF Japan F1 | 2018/03/07 01:00 | Cheng-Yu Yu v Gengo Kikuchi | 5-7,5-7 |
| Davis Cup | 2018/02/03 11:00 | Benjamin Hassan v Cheng-Yu Yu | 5-7,6-3,6-4 |
| ITF Indonesia F8 | 2017/11/30 03:00 | N. Vijay Sundar Prashanth v Cheng-Yu Yu | 7-6,6-4 |
| ITF Indonesia F8 | 2017/11/29 04:00 | Cheng-Yu Yu v Mukund Sasikumar | 6-2,6-7,7-5 |
| ITF Indonesia F8 | 2017/11/28 03:30 | Ken Onoda v Cheng-Yu Yu | 1-6,2-6 |
| ITF Vietnam F3 | 2018/05/13 05:00 | Darren Polkinghorne v Alexander Crnokrak | 6-3,5-7,2-6 |
| ITF Vietnam F1 | 2018/04/28 06:00 | Nicholas Bybel v Alexander Crnokrak | 6-1,6-3 |
| ITF Australia F4 Qual | 2018/03/24 23:00 | Jesse Delaney v Alexander Crnokrak | 6-7,6-4,6-4 |
| ITF Australia F3 Qual | 2018/03/19 00:00 | Alexander Crnokrak v Jayden Court | 7-6,5-7,2-6 |
| ITF Australia F2 Qual | 2018/03/02 23:00 | Alexander Crnokrak v Jason Taylor | 3-6,3-6 |
| ITF Australia F1 | 2018/02/27 02:25 | Chanchai Sookton-Eng v Alexander Crnokrak | 6-1,6-4 |
| Challenger Canberra | 2018/01/09 00:00 | Alexander Crnokrak v Geoffrey Blancaneaux | 1-6,2-6 |
| Australian Open WC | 2017/12/12 23:00 | Alex Bolt v Alexander Crnokrak | 6-1,6-3,6-3 |