Ground: Hardcourt outdoor
| ITF Japan F3 | 2014/03/24 01:00 | Oku, Hiromasa v Matsuzaki, Yutaro | 2-6,4-6 |
| ITF Japan F1 | 2015/03/07 03:00 | Chaplin, Jarryd v Matsuzaki, Yutaro | 6-3,6-2 |
| ITF Japan F3 | 2014/03/26 02:25 | Matsuzaki, Yutaro v Ito, Yuichi | 0-6,2-6 |
| ITF Japan F3 | 2014/03/24 01:00 | Oku, Hiromasa v Matsuzaki, Yutaro | 2-6,4-6 |
| ITF Japan F1 | 2015/03/10 01:00 | Ito, Yuichi v Oku, Hiromasa | 6-2,6-4 |
| ITF Hong Kong F2 | 2014/07/14 03:30 | Kikuchi, Gengo v Oku, Hiromasa | 6-7,6-4,6-2 |
| ITF Japan F8 | 2014/06/26 03:30 | Oku, Hiromasa v Yoshihito Nishioka | 0-6,3-6 |
| ITF Japan F8 | 2014/06/25 01:00 | Moritani, Soichiro v Oku, Hiromasa | 3-6,3-6 |
| ITF Japan F7 | 2014/06/22 06:40 | Kibi, Yuya v Oku, Hiromasa | 6-4,6-3 |
| ITF Japan F7 | 2014/06/21 03:20 | Ono, Yohei v Oku, Hiromasa | 2-6,4-6 |
| ITF Japan F6 | 2014/06/14 02:00 | Oku, Hiromasa v Kibi, Yuya | 0-6,2-6 |
| ITF Japan F6 | 2014/06/13 02:50 | Takeshima, Shunrou v Oku, Hiromasa | 1-6,0-6 |