| ITF Japan F6 | 2015/06/11 01:00 | Masayoshi Ono v Toshihide Matsui | 5-7,0-6 |
| ITF Guam F1 | 2015/05/27 00:00 | Hiromasa Oku v Masayoshi Ono | 6-0,6-2 |
| ITF Guam F1 | 2015/05/24 02:00 | Winter Meagher v Masayoshi Ono | 2-6,2-6 |
| ITF Greece F6 | 2015/04/27 09:20 | Stephanos Schinas v Masayoshi Ono | 6-7,6-4,6-1 |
| ITF Greece F5 | 2015/04/18 08:30 | Delf Gohlke v Masayoshi Ono | 6-7,6-2,6-2 |
| ITF Japan F4 | 2015/03/28 03:00 | Masaki Sasai v Masayoshi Ono | 6-4,6-1 |
| ITF Japan F1 | 2015/03/07 01:00 | Yohei Ono v Masayoshi Ono | 6-4,7-6 |
| ITF Greece F9 Qual | 2014/11/11 09:40 | Masayoshi Ono v Tomislav Jotovski | 4-6,2-6 |
| ITF Japan F7 | 2015/06/19 03:00 | Arata Onozawa v Jumpei Yamasaki | 6-2,4-6,0-6 |
| ITF Japan F7 | 2015/06/18 00:30 | Arata Onozawa v Renta Tokuda | 6-4,6-2 |
| ITF Japan F7 | 2015/06/16 02:15 | Arata Onozawa v Keisuke Watanuki | 7-6,0-6,6-3 |
| ITF Japan F5 | 2015/06/02 01:00 | Makoto Ochi v Arata Onozawa | 3-6,6-2,6-4 |
| ITF China F6 | 2015/05/26 07:20 | Arata Onozawa v Peng-Xiang Gong | 6-0,6-2 |
| ITF China F6 | 2015/05/20 02:00 | Arata Onozawa v Xi Qi | 4-6,1-6 |
| ITF Thailand F9 | 2015/05/06 03:00 | Arata Onozawa v Phassawit Bura'ritta | 6-2,0-6,5-7 |
| ITF Thailand F9 | 2015/05/05 04:25 | Arata Onozawa v Makoto Ochi | 6-3,6-3 |