Round: 27 Ground: Hardcourt outdoor
| ITF Japan F5 | 2015/06/01 04:10 | Issei Okamura v Ryota Tanuma | 6-7,4-6 |
| ITF Chinese Taipei F1 | 2015/08/20 03:30 | Masato Shiga v Issei Okamura | 4-6,4-6 |
| ITF Thailand F9 | 2015/08/11 08:20 | Daniel Hobart v Issei Okamura | 6-2,6-4 |
| ITF Thailand F9 | 2015/08/09 05:35 | Roy Hobbs v Issei Okamura | 2-6,1-6 |
| ITF Thailand F9 | 2015/08/06 03:00 | Issei Okamura v Vishnu Vardhan | 3-6,4-6 |
| ITF Thailand F9 | 2015/08/05 05:10 | Jirat Navasirisomboon v Issei Okamura | 6-7,5-7 |
| ITF Thailand F9 | 2015/08/04 08:00 | Shao-Fan Liu v Issei Okamura | 4-6,2-6 |
| ITF Thailand F9 | 2015/08/01 05:00 | Issei Okamura v Aditya Deswal | 6-2,6-2 |
| ITF Thailand F9 | 2015/06/24 04:30 | Issei Okamura v Hiroka Kondo | 1-6,2-6 |
| ITF Chinese Taipei F1 | 2015/08/20 03:35 | Ryota Tanuma v Tung-Lin Wu | 6-3,6-3 |
| ITF Thailand F9 | 2015/08/13 03:00 | Ti Chen v Ryota Tanuma | 6-4,6-3 |
| ITF Thailand F9 | 2015/08/12 03:00 | Ryota Tanuma v Toshihide Matsui | 6-3,6-2 |
| ITF Thailand F9 | 2015/08/10 03:00 | Shao-Fan Liu v Ryota Tanuma | 1-6,0-6 |
| ITF Thailand F9 | 2015/08/06 03:00 | Ryota Tanuma v Jordan Thompson | 3-6,3-6 |
| ITF Thailand F9 | 2015/08/05 05:25 | Dane Propoggia v Ryota Tanuma | 6-7,4-6 |
| ITF Thailand F9 | 2015/08/04 07:15 | Kittiphong Wachiramanowong v Ryota Tanuma | 3-6,1-6 |
| ITF China F11 | 2015/07/23 02:00 | Ryota Tanuma v Yecong He | 2-6,6-7 |