| ITF Japan F7 | 06/19 03:00 | - | Oku, Hiromasa v 와타누키, 유스케 | 2-6,3-6 | |
| ITF Japan F7 | 06/18 02:05 | - | Oku, Hiromasa v 오치, 마코토 | 6-4,6-3 | |
| ITF Japan F7 | 06/16 00:30 | - | Oku, Hiromasa v Kang, Ku Keon | 6-2,6-1 | |
| ITF Japan F6 | 06/10 01:30 | - | Watanuki, Keisuke v Oku, Hiromasa | 6-2,6-3 | |
| ITF Japan F5 | 06/06 03:00 | - | 사이토, 타카시 v Oku, Hiromasa | 6-3,6-1 | |
| ITF Japan F5 | 06/05 02:35 | - | Oku, Hiromasa v 오치, 마코토 | 2-6,6-2,6-4 | |
| ITF Japan F5 | 06/04 01:00 | - | Oku, Hiromasa v 이토, 유이치 | 6-0,6-1 | |
| ITF Japan F5 | 06/02 03:15 | - | Oku, Hiromasa v Sano, Koichi | 6-4,3-6,6-2 | |
| ITF Guam F1 | 05/29 00:00 | - | Oku, Hiromasa v Suzuki, Takao | 6-4,6-7,5-7 | |
| ITF Guam F1 | 05/27 00:00 | - | Oku, Hiromasa v 오노, 마사요시 | 6-0,6-2 | |
| ITF Guam F1 | 05/26 00:00 | - | Oku, Hiromasa v Sasai, Masaki | 6-1,6-1 | |
| ITF Thailand F9 | 04/28 03:00 | - | 이토, 유이치 v Oku, Hiromasa | 6-4,2-6,4-6 | |
| ITF Thailand F9 | 04/22 07:50 | - | Oku, Hiromasa v 임, 영규 | 3-6,1-6 | |
| ITF Thailand F9 | 04/20 03:00 | - | 그릴스, 야콥 v Oku, Hiromasa | 6-2,3-6,1-6 | |
| ITF Japan F3 | 03/23 01:00 | - | Oku, Hiromasa v Sasai, Masaki | Retired | |
| ITF Japan F3 | 03/21 02:30 | - | Oku, Hiromasa v 우스기, 카이토 | 6-4,6-4 | |
| ITF Japan F2 | 03/16 01:00 | - | Matsuzaki, Yutaro v Oku, Hiromasa | 6-2,3-6,7-6 | |
| ITF Japan F1 | 03/10 01:00 | - | 이토, 유이치 v Oku, Hiromasa | 6-2,6-4 | |
| ITF Hong Kong F2 | 07/14 03:30 | - | 키쿠치, 겐고 v Oku, Hiromasa | 6-7,6-4,6-2 | |
| ITF Japan F8 | 06/26 03:30 | - | Oku, Hiromasa v 니시오카, 요시히토 | 0-6,3-6 | |
| ITF Japan F8 | 06/25 01:00 | - | 모리타니, 소이치로 v Oku, Hiromasa | 3-6,3-6 | |
| ITF Japan F7 | 06/22 06:40 | - | Kibi, Yuya v Oku, Hiromasa | 6-4,6-3 | |
| ITF Japan F7 | 06/21 03:20 | - | Ono, Yohei v Oku, Hiromasa | 2-6,4-6 | |
| ITF Japan F7 | 06/19 03:55 | - | Oku, Hiromasa v Onozawa, Arata | Retired | |
| ITF Japan F6 | 06/14 02:00 | - | Oku, Hiromasa v Kibi, Yuya | 0-6,2-6 | |
| ITF Japan F6 | 06/13 02:50 | - | 타케시마, 순로우 v Oku, Hiromasa | 1-6,0-6 | |
| ITF Japan F6 | 06/13 00:00 | - | Oku, Hiromasa v 훙, 주이-첸 | 6-2,6-4 | |
| ITF Japan F6 | 06/10 03:20 | - | 키쿠치, 겐고 v Oku, Hiromasa | 3-6,6-7 | |
| ITF Japan F5 | 06/05 01:00 | - | Oku, Hiromasa v Kibi, Yuya | 4-6,2-6 | |
| ITF Japan F5 | 06/04 01:00 | - | Oku, Hiromasa v Nagao, Katsuki | 7-6,7-6 |