Stadium: Court 2 Round: 46
| ITF Thailand F8 | 2017/10/10 07:50 | Hiroyasu Ehara v Nam Hoang Ly | 0-6,5-7 |
| ITF Thailand F7 | 2017/10/03 09:50 | Remy Bertola v Hiroyasu Ehara | 6-2,6-4 |
| ITF Switzerland F5 | 2017/09/03 12:20 | Hiroyasu Ehara v Marc-Andrea Huesler | 4-6,6-4,6-2 |
| ITF Switzerland F5 | 2017/09/02 11:15 | Matteo Viola v Hiroyasu Ehara | 5-7,7-5,6-7 |
| ITF Switzerland F5 | 2017/09/01 11:10 | Hiroyasu Ehara v Juan Manuel Benitez Chavarriaga | 1-6,6-2,6-3 |
| ITF Switzerland F5 | 2017/08/30 13:40 | Hiroyasu Ehara v Jacob Kahoun | 7-6,6-1 |
| ITF Switzerland F5 | 2017/08/29 08:00 | Hiroyasu Ehara v Mirko Martinez | 6-4,6-3 |
| ITF Switzerland F4 | 2017/08/26 10:30 | Tim Puetz v Hiroyasu Ehara | 6-2,6-2 |
| Challenger Toyota Qual | 2017/11/11 02:15 | Yuto Sakai v Masaki Osafune | 7-6,1-6,6-1 |
| Challenger Kobe Qual | 2017/11/04 05:20 | Yuto Sakai v Sora Fukuda | 1-6,3-6 |
| ITF Japan F8 | 2017/06/15 01:00 | Yuto Sakai v Yusuke Watanuki | 4-6,6-3,3-6 |
| ITF Japan F8 | 2017/06/14 01:00 | Yuto Sakai v Yohei Ono | 7-5,6-0 |
| 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 |