Round: 54 Ground: Clay
| ITF Japan F5 | 2017/04/01 02:00 | Koichi Sano v Artem Vu | 6-2,6-4 |
| ITF Japan F4 | 2017/03/25 03:00 | Koichi Sano v Yohei Ono | 3-6,1-6 |
| ITF Japan F3 | 2017/03/18 00:30 | Yuki Matsuo v Koichi Sano | 6-4,7-6 |
| ITF Japan F2 | 2017/03/14 06:05 | Генджо Кикучи v Koichi Sano | 6-2,6-4 |
| ITF Japan F2 | 2017/03/13 01:00 | Collin Johns v Koichi Sano | 5-7,6-4,4-6 |
| ITF Japan F2 | 2017/03/12 03:00 | Kaito Itsusaki v Koichi Sano | 6-7,1-6 |
| ITF Japan F1 | 2017/03/05 01:00 | Koichi Sano v Юга Таширо | 2-6,4-6 |
| ITF Vietnam F8 | 2016/09/18 03:00 | Koichi Sano v Shinta Fujii | 4-6,3-6 |
| ITF Japan F5 | 2017/04/01 02:00 | Римпеи Каваками v Дайсуке Сумизава | 7-5,6-4 |
| ITF Japan F3 | 2017/03/22 02:05 | Хонг Чунг v Римпеи Каваками | 6-2,3-6,6-2 |
| ITF Japan F3 | 2017/03/19 01:00 | Arata Onozawa v Римпеи Каваками | 3-6,6-2,2-6 |
| ITF Japan F3 | 2017/03/18 06:00 | Римпеи Каваками v Вей-Де Лин | 6-2,6-2 |
| ITF Japan F3 | 2017/03/18 00:30 | Римпеи Каваками v Рио Ногучи | 6-4,7-6 |
| ITF Vietnam F4 | 2016/09/13 03:00 | Zhaoyi Cao v Римпеи Каваками | 6-4,7-5 |
| ITF Vietnam F4 | 2016/09/11 03:00 | Ahmed Deedat Abdul Razak v Римпеи Каваками | 2-6,0-6 |
| ITF Vietnam F4 | 2016/09/10 03:00 | Римпеи Каваками v Patrick Rynsaardt | 6-2,6-3 |