Round: 54 Ground: Hardcourt outdoor
| ITF - Japan F2 | 2015/03/16 01:00 | Yutaro Matsuzaki v Hiromasa Oku | 6-2,3-6,7-6 |
| ITF - Japan F3 | 2014/03/24 01:00 | Hiromasa Oku v Yutaro Matsuzaki | 2-6,4-6 |
| ITF - Japan F1 | 2016/03/10 01:00 | Hiromasa Oku v Shintaro Imai | 6-3,2-6,1-6 |
| 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 F8 | 2015/06/24 04:20 | Yasutaka Uchiyama v Yutaro Matsuzaki | 6-2,6-4 |
| ITF - Japan F4 | 2015/03/30 01:00 | Ryotaro Matsumura v Yutaro Matsuzaki | 6-4,6-3 |
| ITF - Japan F4 | 2015/03/28 00:30 | Yutaro Matsuzaki v Kazuki Nishiwaki | 6-7,6-4,6-4 |
| ITF - Japan F3 | 2015/03/22 01:00 | Takashi Saito v Yutaro Matsuzaki | 6-0,6-3 |
| ITF - Japan F2 | 2015/03/18 02:40 | Yutaro Matsuzaki v Hiroyasu Ehara | 4-6,6-4,3-6 |
| ITF - Japan F2 | 2015/03/16 01:00 | Yutaro Matsuzaki v Hiromasa Oku | 6-2,3-6,7-6 |
| ITF - Japan F1 | 2015/03/07 03:00 | Jarryd Chaplin v Yutaro Matsuzaki | 6-3,6-2 |
| ITF - Japan F3 | 2014/03/26 02:25 | Yutaro Matsuzaki v Yuichi Ito | 0-6,2-6 |