Round: 25 Ground: Hardcourt outdoor
| ITF Japan F3 | 2017/03/22 00:30 | Yusuke Takahashi v Gengo Kikuchi | 6-3,6-1 |
| ITF Japan F2 | 2017/03/15 03:55 | Gengo Kikuchi v Ibuki Furuta | 0-6,6-3,3-6 |
| ITF Japan F2 | 2017/03/14 06:05 | Gengo Kikuchi v Koichi Sano | 6-2,6-4 |
| ITF Japan F1 | 2017/03/09 01:00 | Gengo Kikuchi v Takuto Niki | 0-6,4-6 |
| ITF Japan F1 | 2017/03/07 02:40 | Jumpei Yamasaki v Gengo Kikuchi | 4-6,2-6 |
| Challenger Yokohama Qual | 2017/02/25 01:00 | Jimmy Wang v Gengo Kikuchi | 6-3,3-6,6-1 |
| Challenger Kyoto Qual | 2017/02/19 02:05 | Lloyd Harris v Gengo Kikuchi | 6-3,6-4 |
| Challenger Kyoto Qual | 2017/02/18 01:00 | Gengo Kikuchi v Tamaki Yamao | 7-6,6-4 |
| ITF Japan F4 | 2017/03/28 03:00 | Collin Johns v Kaito Itsusaki | 2-6,6-2,4-6 |
| ITF Japan F4 | 2017/03/27 01:00 | Takuya Komura v Kaito Itsusaki | 7-5,3-6,3-6 |
| ITF Japan F3 | 2017/03/18 00:30 | Kazuki Nishiwaki v Kaito Itsusaki | 6-3,6-4 |
| ITF Japan F2 | 2017/03/12 03:00 | Kaito Itsusaki v Koichi Sano | 6-7,1-6 |
| ITF Japan F2 | 2017/03/11 03:00 | Kaito Itsusaki v Yuki Nakamura | 6-3,6-0 |
| ITF Japan F1 | 2017/03/10 01:00 | Kaito Itsusaki v Takuto Niki | 2-6,4-6 |
| ITF Japan F1 | 2017/03/09 01:00 | Liang-Chi Huang v Kaito Itsusaki | 4-6,0-6 |
| ITF Japan F1 | 2017/03/08 03:00 | Taiki Hashimoto v Kaito Itsusaki | 2-6,1-6 |