Round: 27 Ground: Clay
| ITF Korea F8 | 2016/08/24 04:20 | Makoto Ochi v Onozawa, Arata | 6-3,6-2 |
| ITF Japan F6 | 2016/05/31 01:00 | Makoto Ochi v Onozawa, Arata | 6-2,6-3 |
| ITF Japan F5 | 2015/06/02 01:00 | Makoto Ochi v Onozawa, Arata | 3-6,6-2,6-4 |
| ITF Thailand F9 | 2015/05/05 04:25 | Onozawa, Arata v Makoto Ochi | 6-3,6-3 |
| ITF Korea F7 | 2016/08/31 04:35 | Makoto Ochi v Nagao, Katsuki | 6-3,6-2 |
| ITF Korea F7 | 2016/08/30 01:30 | Makoto Ochi v Nam, Ji Sung | 6-1,6-4 |
| ITF Korea F8 | 2016/08/27 04:00 | Makoto Ochi v Nam, Ji Sung | 7-5,1-6,1-6 |
| ITF Korea F8 | 2016/08/26 03:00 | Makoto Ochi v Kim, Cheong-Eui | 1-6,7-5,7-5 |
| ITF Korea F8 | 2016/08/25 03:55 | Makoto Ochi v Katayama, Sho | 6-1,6-2 |
| ITF Korea F8 | 2016/08/24 04:20 | Makoto Ochi v Onozawa, Arata | 6-3,6-2 |
| ITF Korea F1 | 2016/06/18 02:00 | Cho, Min Hyeok v Makoto Ochi | 6-3,6-3 |
| ITF Korea F1 | 2016/06/17 03:35 | Makoto Ochi v Moon, Ju-Hae | 6-1,6-2 |
| ITF Korea F7 | 2016/08/31 02:00 | Na, Jung-Woong v Onozawa, Arata | 6-7,5-7 |
| 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 |