Ground: Synthetic outdoor
| 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 | タケシマ,シュンロウ v Oku, Hiromasa | 1-6,0-6 |
| ITF Japan F6 | 2014/06/13 00:00 | Oku, Hiromasa v Hung, Jui-Chen | 6-2,6-4 |
| ITF Japan F6 | 2014/06/10 03:20 | 菊池 玄吾 v Oku, Hiromasa | 3-6,6-7 |
| ITF Japan F5 | 2014/06/05 01:00 | Oku, Hiromasa v Kibi, Yuya | 4-6,2-6 |
| ITF Japan F5 | 2014/06/04 01:00 | Oku, Hiromasa v Nagao, Katsuki | 7-6,7-6 |
| ITF Japan F5 | 2014/06/03 02:30 | 斎藤 隆 v Oku, Hiromasa | 2-6,4-6 |
| ITF Korea F1 Qual | 2014/04/29 00:30 | ナ,ジュン・ウン v Oku, Hiromasa | 6-3,6-4 |
| ITF Japan F6 | 2014/06/13 00:00 | Ho, Chih-Jen v Onozawa, Arata | 6-4,6-2 |
| ITF Japan F6 | 2014/06/10 01:30 | モリタニ,ソウイチロウ v Onozawa, Arata | 1-6,6-7 |
| ITF Thailand F10 | 2014/05/29 03:00 | Onozawa, Arata v グリルズ,ヤコブ | 3-6,1-6 |
| ITF Thailand F10 | 2014/05/28 05:10 | Onozawa, Arata v ケスート,チャヤノン | 6-0,6-4 |
| ITF Thailand F10 | 2014/05/27 06:20 | Onozawa, Arata v Sornbutnark, Warit | 7-6,6-1 |
| ITF Japan F1 | 2014/03/14 01:00 | ウ,ディ v Onozawa, Arata | 6-3,6-0 |
| ITF Japan F1 | 2014/03/11 02:55 | Onozawa, Arata v Osafune, Masaki | 4-6,6-1,6-3 |