| ITF Japan F8 | 2017/06/12 00:00 | Luca Castelnuovo v Yuto Sakai | 7-6,4-6,6-7 |
| ITF Japan F8 | 2017/06/11 03:00 | Yuto Sakai v Shinji Hazawa | 6-1,6-4 |
| ITF Japan F6 | 2017/06/01 04:10 | Yuto Sakai v Sora Fukuda | 6-7,3-6 |
| ITF Japan F6 | 2017/05/31 01:00 | Yuto Sakai v Sora Fukuda | 6-7,3-6 |
| ITF Japan F6 | 2017/05/30 03:30 | Yuto Sakai v Arata Onozawa | 7-6,7-5 |
| ITF Japan F6 Qual | 2017/05/29 01:00 | Keisuke Watanuki v Yuto Sakai | 6-7,6-7 |
| ITF Japan F6 Qual | 2017/05/28 07:00 | Keisuke Watanuki v Yuto Sakai | 6-7,6-7 |
| ITF Japan F5 | 2017/04/01 01:00 | Yuto Sakai v Kazuki Nishiwaki | 2-6,6-7 |
| ITF Japan F8 | 2017/06/12 00:00 | Yohei Ono v Hiromasa Oku | 6-3,6-3 |
| ITF Japan F8 | 2017/06/11 00:00 | Yuichiro Inui v Yohei Ono | 6-7,2-6 |
| ITF Japan F4 | 2017/03/28 01:00 | Yohei Ono v Tomohiro Masabayashi | 3-6,2-6 |
| 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 | Collin Johns v Yohei Ono | 7-5,6-2 |
| ITF Japan F1 | 2017/03/06 01:00 | Yohei Ono v Shinta Fujii | 5-7,5-7 |
| ITF Japan F1 | 2017/03/05 01:00 | Yohei Ono v Yohei Otsuka | 6-3,6-3 |
| ITF Japan F1 | 2017/03/04 01:00 | Collin Johns v Yohei Ono | 3-6,6-4,5-7 |