| ITF Japan F5 | 2015/06/04 01:00 | Oku, Hiromasa v Ito, Yuichi | 6-0,6-1 |
| ITF Japan F5 | 2015/06/02 03:15 | Oku, Hiromasa v Sano, Koichi | 6-4,3-6,6-2 |
| ITF Guam F1 | 2015/05/29 00:00 | Oku, Hiromasa v Suzuki, Takao | 6-4,6-7,5-7 |
| ITF Guam F1 | 2015/05/27 00:00 | Oku, Hiromasa v Ono, Masayoshi | 6-0,6-2 |
| ITF Guam F1 | 2015/05/26 00:00 | Oku, Hiromasa v Sasai, Masaki | 6-1,6-1 |
| ITF Thailand F9 | 2015/04/28 03:00 | Ito, Yuichi v Oku, Hiromasa | 6-4,2-6,4-6 |
| ITF Thailand F9 | 2015/04/22 07:50 | Oku, Hiromasa v Lim, Yong-Kyu | 3-6,1-6 |
| ITF Thailand F9 | 2015/04/20 03:00 | Grills, Jacob v Oku, Hiromasa | 6-2,3-6,1-6 |
| ITF Japan F5 | 2015/06/03 06:00 | Ryota Tanuma v Makoto Ochi | 5-7,4-6 |
| ITF Japan F5 | 2015/06/02 01:00 | Makoto Ochi v Onozawa, Arata | 3-6,6-2,6-4 |
| ITF Thailand F9 | 2015/05/05 04:25 | Onozawa, Arata v Makoto Ochi | 6-3,6-3 |
| ITF Thailand F9 | 2015/05/03 03:00 | Patrombon, Jeson v Makoto Ochi | 5-7,1-6 |
| ITF Thailand F9 | 2015/05/02 03:00 | Klaoklang, Marut v Makoto Ochi | 0-6,0-6 |
| ITF Thailand F9 | 2015/04/29 06:15 | Makoto Ochi v Nam Hoang Ly | 5-7,2-6 |
| ITF Thailand F9 | 2015/04/28 05:35 | Wachiramanowong, Kittipong v Makoto Ochi | 6-7,3-6 |
| ITF Thailand F9 | 2015/04/25 06:30 | Makoto Ochi v Kelsey Stevenson | 7-5,7-6 |