Round: 26 Ground: Clay
| ITF Japan F5 | 2016/04/05 07:30 | Onozawa, Arata v Kaito Uesugi | 6-3,6-4 |
| ITF China F2 | 2016/02/24 02:00 | Onozawa, Arata v Ubiergo, Jordan | 3-6,2-6 |
| ITF China F2 | 2016/02/22 05:20 | Duan, Jia Qi v Onozawa, Arata | 6-7,3-6 |
| ITF China F1 | 2016/02/18 03:40 | Ubiergo, Jordan v Onozawa, Arata | 7-5,2-6,6-3 |
| ITF China F1 | 2016/02/17 06:10 | Qi, Xi v Onozawa, Arata | 2-6,2-6 |
| ITF China F13 | 2015/08/14 02:00 | Onozawa, Arata v Yang, Tsung-Hua | 4-6,6-7 |
| ITF China F13 | 2015/08/13 02:00 | Kibi, Yuya v Onozawa, Arata | 6-1,1-6,2-6 |
| ITF China F13 | 2015/08/12 02:00 | Onozawa, Arata v Hadavi, Shawn H | 6-3,6-0 |
| ITF Japan F5 | 2016/04/05 03:30 | Ito, Yuichi v Yu, Cheng-Yu | 7-5,6-4 |
| ITF Japan F4 | 2016/03/31 01:00 | Ito, Yuichi v Soonwoo Kwon | 5-7,5-7 |
| ITF Japan F4 | 2016/03/30 02:40 | Ito, Yuichi v Horie, Toru | 6-1,6-4 |
| ITF Japan F3 | 2016/03/20 02:30 | Ito, Yuichi v Nam Hoang Ly | 2-6,6-7 |
| ITF Japan F3 | 2016/03/19 03:45 | Ito, Yuichi v Yusuke Takahashi | 7-5,6-4 |
| ITF Japan F2 | 2016/03/15 02:10 | Kishi, Ryota v Ito, Yuichi | 7-6,6-4 |
| ITF Japan F2 | 2016/03/13 01:00 | Ito, Yuichi v Takamura, Yuki | 6-3,6-2 |
| ITF Japan F1 | 2016/03/08 01:00 | Katayama, Sho v Ito, Yuichi | 6-3,4-6,6-2 |