Ground: Synthetic outdoor
| ITF Japan F5 | 2015/06/05 02:35 | Oku, Hiromasa v Makoto Ochi | 2-6,6-2,6-4 |
| ITF Japan F7 | 2015/06/16 00:30 | Oku, Hiromasa v Ku Keon Kang | 6-2,6-1 |
| ITF Japan F6 | 2015/06/10 01:30 | Watanuki, Keisuke v Oku, Hiromasa | 6-2,6-3 |
| ITF Japan F5 | 2015/06/06 03:00 | Saito, Takashi v Oku, Hiromasa | 6-3,6-1 |
| ITF Japan F5 | 2015/06/05 02:35 | Oku, Hiromasa v Makoto Ochi | 2-6,6-2,6-4 |
| 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 Japan F6 Qual | 2015/06/08 01:00 | Makoto Ochi v Renta Tokuda | 6-7,6-1,4-6 |
| ITF Japan F6 Qual | 2015/06/07 01:00 | Makoto Ochi v Otsuka, Yohei | 3-6,6-0,6-1 |
| ITF Japan F5 | 2015/06/05 02:35 | Oku, Hiromasa v Makoto Ochi | 2-6,6-2,6-4 |
| 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 |