Round: 26 Ground: Clay
| ITF Korea F7 | 2016/08/30 06:05 | Na, Jung-Woong v Choi, Seungri | 6-1,6-3 |
| ITF Korea F8 | 2016/08/22 02:30 | Na, Jung-Woong v Oku, Hiromasa | 4-6,6-1,6-0 |
| ITF Korea F1 | 2016/06/16 01:00 | Na, Jung-Woong v Kim, Seong Kwan | 4-6,6-3,6-7 |
| ITF Korea F1 | 2016/06/14 01:30 | Na, Jung-Woong v Nam, Hyun Woo | 7-5,6-2 |
| ITF China F11 | 2015/07/21 03:20 | Na, Jung-Woong v Yang, Tsung-Hua | 5-7,4-6 |
| ITF China F10 | 2015/07/16 02:00 | Zhe Li v Na, Jung-Woong | 6-4,6-3 |
| ITF China F10 | 2015/07/15 03:30 | Na, Jung-Woong v Kim, Young Seok | 7-5,1-6,6-3 |
| ITF China F10 | 2015/07/14 02:00 | Na, Jung-Woong v Ma, Ke | 6-0,6-0 |
| ITF Korea F7 | 2016/08/29 02:30 | Onozawa, Arata v Kikuchi, Gengo | 3-6,6-2,6-3 |
| ITF Korea F8 | 2016/08/24 04:20 | Makoto Ochi v Onozawa, Arata | 6-3,6-2 |
| ITF Korea F8 | 2016/08/23 03:25 | Choi, Seungri v Onozawa, Arata | 3-6,3-6 |
| ITF Vietnam F8 | 2016/08/09 02:00 | Onozawa, Arata v Hung, Jui-Chen | 6-3,6-3 |
| ITF Vietnam F8 | 2016/08/04 02:30 | Onozawa, Arata v Mukund Sasikumar | 1-6,3-6 |
| ITF Vietnam F8 | 2016/08/02 02:00 | Onozawa, Arata v Kanar, Jonathan | 7-5,6-4 |
| ITF Hong Kong F3 | 2016/06/22 22:00 | Reinwein, Sami v Onozawa, Arata | 6-2,6-2 |
| ITF Hong Kong F3 | 2016/06/21 22:00 | Susanto, David Agung v Onozawa, Arata | 3-6,4-6 |