Round: 25 Ground: Hardcourt outdoor
| ITF - Japan F8 | 2015/06/24 01:10 | Hiromasa Oku v Sho Katayama | 6-7,0-6 |
| ITF - Japan F7 | 2015/06/19 03:00 | Hiromasa Oku v Yusuke Watanuki | 2-6,3-6 |
| ITF - Japan F7 | 2015/06/18 02:05 | Hiromasa Oku v Makoto Ochi | 6-4,6-3 |
| ITF - Japan F7 | 2015/06/16 00:30 | Hiromasa Oku v Ku Keon Kang | 6-2,6-1 |
| ITF - Japan F6 | 2015/06/10 01:30 | Keisuke Watanuki v Hiromasa Oku | 6-2,6-3 |
| ITF - Japan F5 | 2015/06/06 03:00 | Takashi Saito v Hiromasa Oku | 6-3,6-1 |
| ITF - Japan F5 | 2015/06/05 02:35 | Hiromasa Oku v Makoto Ochi | 2-6,6-2,6-4 |
| ITF - Japan F5 | 2015/06/04 01:00 | Hiromasa Oku v Yuichi Ito | 6-0,6-1 |
| ITF - Japan F1 | 2016/03/07 01:00 | Shintaro Imai v Ryota Kishi | 6-4,6-4 |
| ITF - Japan F1 | 2016/03/06 01:00 | Shintaro Imai v Yusuke Takahashi | 6-0,6-1 |
| ITF - Korea F1 | 2015/05/20 05:00 | Soonwoo Kwon v Shintaro Imai | 7-5,6-3 |
| ITF - Korea F1 | 2015/05/19 01:00 | Shintaro Imai v Jeamoon Lee | 6-3,6-3 |
| ITF - Korea F1 | 2015/05/17 02:00 | Shintaro Imai v Dong-Hak Sin | 6-4,6-0 |
| ITF - Korea F1 | 2015/05/16 01:00 | Shintaro Imai v Seung-Hun Shin | 6-2,6-2 |
| ITF - Japan F4 | 2015/03/31 01:00 | Yong-Kyu Lim v Shintaro Imai | 6-3,6-4 |
| ITF - Japan F3 | 2015/03/26 02:40 | Shintaro Imai v Naoki Nakagawa | 6-3,2-6,6-7 |