Round: 54 Ground: Synthetic outdoor
| ITF - Japan F6 | 2017/06/01 02:00 | Kento Takeuchi v Tomohiro Masabayashi | 6-4,6-0 |
| ITF - Japan F6 | 2017/05/31 01:00 | Kento Takeuchi v Tomohiro Masabayashi | 6-4,6-0 |
| ITF - Japan F6 | 2017/05/30 01:00 | Tomohiro Masabayashi v Shunrou Takeshima | 6-1,1-6,6-4 |
| ITF - Japan F6 - Qualifikation | 2017/05/28 01:00 | Shinta Fujii v Tomohiro Masabayashi | 6-2,4-6,2-6 |
| ITF - Japan F6 - Qualifikation | 2017/05/27 01:00 | Tomohiro Masabayashi v Taisei Miyamoto | 6-3,7-5 |
| ITF - Japan F5 | 2017/04/02 01:00 | Tomohiro Masabayashi v Kazuki Nishiwaki | 1-6,6-7 |
| ITF - Japan F5 | 2017/04/01 01:00 | Ken Onoda v Tomohiro Masabayashi | 3-6,6-7 |
| ITF - Japan F4 | 2017/03/29 03:15 | Renta Tokuda v Tomohiro Masabayashi | 6-3,6-3 |
| ITF - Japan F6 | 2017/05/30 01:00 | Hiromasa Oku v Tung-Lin Wu | 1-6,2-6 |
| ITF - Japan F5 | 2017/04/02 01:00 | Hiromasa Oku v Naoki Tajima | 1-6,0-6 |
| ITF - Japan F4 | 2017/03/25 02:00 | Hiromasa Oku v Masaki Osafune | 1-6,0-6 |
| ITF - Japan F3 | 2017/03/18 03:00 | Yuga Tashiro v Hiromasa Oku | 6-3,6-2 |
| ITF Korea F8 | 2016/09/06 02:55 | Young Seok Kim v Hiromasa Oku | 6-0,6-2 |
| ITF Korea F7 | 2016/08/30 06:45 | Hiromasa Oku v Jeamoon Lee | 3-6,6-7 |
| ITF Korea F8 | 2016/08/22 02:30 | Jung-Woong Na v Hiromasa Oku | 4-6,6-1,6-0 |
| ITF - Vietnam F8 | 2016/08/01 02:00 | Hiromasa Oku v Sora Fukuda | 2-6,3-6 |