Round: 25 Ground: Hardcourt outdoor
| Challenger Gimcheon Qual | 2017/04/29 05:10 | Takuto Niki v Hiroyasu Ehara | 6-1,6-4 |
| ITF Japan F5 | 2017/04/03 03:20 | Sho Shimabukuro v Hiroyasu Ehara | 6-1,6-7,6-3 |
| ITF Japan F4 | 2017/03/29 03:40 | Hiroyasu Ehara v Sho Katayama | 2-6,4-6 |
| ITF Japan F3 | 2017/03/22 05:30 | Nam Hoang Ly v Hiroyasu Ehara | 6-2,6-3 |
| ITF Japan F3 | 2017/03/22 00:30 | Hiroyasu Ehara v Max Purcell | 6-3,6-2 |
| ITF Japan F3 | 2017/03/19 01:00 | Hiroyasu Ehara v Shinta Fujii | 6-2,6-2 |
| ITF Japan F3 | 2017/03/18 06:00 | Hiroyasu Ehara v Masaki Sasai | 6-3,6-4 |
| ITF Japan F3 | 2017/03/18 03:00 | Hiroyasu Ehara v Kenta Kurita | 6-1,6-0 |
| ITF Greece F5 | 2017/04/04 06:30 | Masayoshi Ono v Jonny O'Mara | 3-6,3-6 |
| ITF Greece F4 | 2017/03/26 10:00 | Benjamin Sigouin v Masayoshi Ono | 6-1,6-3 |
| ITF Greece F4 | 2017/03/25 07:00 | Masayoshi Ono v Denis Merkulov | 6-3,6-3 |
| ITF Greece F2 Qual | 2017/03/14 07:30 | Masayoshi Ono v Nicholas S. Hu | 6-7,3-6 |
| ITF Greece F2 Qual | 2017/03/11 07:00 | Vlad Cristian Niculae v Masayoshi Ono | 6-7,1-6 |
| ITF Greece F1 | 2017/03/04 10:00 | Anastasios Pavlis v Masayoshi Ono | 6-3,6-2 |
| Others | 2016/11/05 02:00 | Yuki Mochizuki v Masayoshi Ono | 2-6,6-3,6-4 |
| ITF Vietnam F8 | 2016/10/30 03:00 | Mukund Sasikumar v Masayoshi Ono | 6-3,6-2 |