Round: 25 Ground: Hardcourt outdoor
| ITF China F12 | 2017/07/10 05:50 | Wishaya Trongcharoenchaikul v Yu, Cheng-Yu | 4-6,7-6,7-6 |
| ITF Chinese Taipei F2 | 2017/06/24 02:00 | Yu, Cheng-Yu v Yosuke Watanuki | 2-6,4-6 |
| ITF Chinese Taipei F2 | 2017/06/23 02:00 | Yu, Cheng-Yu v Tung-Lin Wu | 6-4,6-2 |
| ITF Chinese Taipei F2 | 2017/06/22 01:30 | Yu, Cheng-Yu v Shen, Jia-Hong | 6-3,6-1 |
| ITF Chinese Taipei F2 | 2017/06/21 01:30 | Yu, Cheng-Yu v Hu, Nicholas S | 6-3,6-3 |
| ITF Chinese Taipei F1 | 2017/06/13 03:40 | Propoggia, Dane v Yu, Cheng-Yu | 6-4,6-4 |
| ITF Singapore F2 | 2017/06/01 05:55 | Sidharth Rawat v Yu, Cheng-Yu | 6-3,6-3 |
| ITF Singapore F2 | 2017/06/01 02:00 | Sidharth Rawat v Yu, Cheng-Yu | 6-3,6-3 |
| ITF Thailand F4 Qual | 2017/07/31 05:10 | Onozawa, Arata v Onoda, Ken | 6-3,6-3 |
| ITF Thailand F4 Qual | 2017/07/30 12:30 | Onozawa, Arata v Nguyen Hoang, Thien | 7-5,4-6,6-1 |
| ITF Hong Kong F1 | 2017/06/20 09:35 | Singh, Karunuday v Onozawa, Arata | 6-4,1-6,6-1 |
| ITF Japan F8 | 2017/06/15 03:05 | Onozawa, Arata v Sano, Koichi | 6-2,1-6,0-6 |
| ITF Japan F8 | 2017/06/14 03:00 | Johan Nikles v Onozawa, Arata | 1-6,0-6 |
| ITF Japan F7 | 2017/06/06 01:00 | Onozawa, Arata v Sasai, Masaki | 6-3,2-6,3-6 |
| ITF Japan F6 | 2017/05/30 03:30 | Sakai, Yuto v Onozawa, Arata | 7-6,7-5 |
| ITF Singapore F1 Qual | 2017/05/21 04:00 | Onozawa, Arata v Look, Michael | 4-6,7-6,4-6 |