| ITF Thailand F9 | 2015/04/28 03:00 | Yuichi Ito v Hiromasa Oku | 6-4,2-6,4-6 |
| ITF Japan F1 | 2015/03/10 01:00 | Yuichi Ito v Hiromasa Oku | 6-2,6-4 |
| ITF Japan F5 | 2015/06/02 03:15 | Hiromasa Oku v Koichi Sano | 6-4,3-6,6-2 |
| ITF Guam F1 | 2015/05/29 00:00 | Hiromasa Oku v Takao Suzuki | 6-4,6-7,5-7 |
| ITF Guam F1 | 2015/05/27 00:00 | Hiromasa Oku v Masayoshi Ono | 6-0,6-2 |
| ITF Guam F1 | 2015/05/26 00:00 | Hiromasa Oku v Masaki Sasai | 6-1,6-1 |
| ITF Thailand F9 | 2015/04/28 03:00 | Yuichi Ito v Hiromasa Oku | 6-4,2-6,4-6 |
| ITF Thailand F9 | 2015/04/22 07:50 | Hiromasa Oku v Yong-Kyu Lim | 3-6,1-6 |
| ITF Thailand F9 | 2015/04/20 03:00 | Jacob Grills v Hiromasa Oku | 6-2,3-6,1-6 |
| ITF Japan F3 | 2015/03/21 02:30 | Hiromasa Oku v Kaito Uesugi | 6-4,6-4 |
| ITF Japan F5 | 2015/06/03 06:00 | Yuichiro Inui v Yuichi Ito | 3-6,3-6 |
| ITF Thailand F9 | 2015/05/05 08:30 | Yuichi Ito v Tyler Hochwalt | 4-6,6-3,3-6 |
| ITF Thailand F9 | 2015/04/28 03:00 | Yuichi Ito v Hiromasa Oku | 6-4,2-6,4-6 |
| ITF Japan F4 | 2015/04/01 03:20 | Yuichi Ito v Takuto Niki | 1-6,4-6 |
| ITF Japan F4 | 2015/03/30 05:00 | Yuichi Ito v Gengo Kikuchi | 1-6,6-3,6-3 |
| ITF Japan F3 | 2015/03/25 03:00 | Masato Shiga v Yuichi Ito | 3-6,6-3,5-7 |
| ITF Japan F2 | 2015/03/17 03:25 | Pietro Licciardi v Yuichi Ito | 7-5,6-4 |
| ITF Japan F1 | 2015/03/14 02:00 | Takuto Niki v Yuichi Ito | 7-6,6-3 |