| 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 F3 | 2017/03/18 06:00 | Shane Vinsant v Yuto Sakai | 6-3,6-2 |
| ITF Japan F3 | 2017/03/18 00:30 | Naru Shirafuji v Yuto Sakai | 3-6,4-6 |
| ITF Japan F4 | 2017/03/30 02:40 | Shinji Hazawa v Tung-Lin Wu | 3-6,6-2,2-6 |
| ITF Japan F4 | 2017/03/29 01:00 | Shintaro Imai v Shinji Hazawa | 6-1,3-6,4-6 |
| Others | 2016/11/06 02:00 | Shinji Hazawa v Kaito Uesugi | 4-6,7-6,4-6 |
| Others | 2016/11/05 05:00 | Shinta Fujii v Shinji Hazawa | 2-6,1-6 |