Ground: Synthetic outdoor
| ITF Japan F4 | 2015/04/02 01:00 | Hiroyasu Ehara v Yusuke Watanuki | 6-3,2-6,6-2 |
| ITF Japan F3 | 2014/03/29 03:30 | Hiroyasu Ehara v Yusuke Watanuki | 1-6,3-6 |
| ITF Japan F7 | 2015/06/20 03:05 | Hiroyasu Ehara v Jumpei Yamasaki | 6-2,6-2 |
| ITF Japan F7 | 2015/06/19 04:45 | Hiroyasu Ehara v Ryota Tanuma | 6-2,6-0 |
| ITF Japan F7 | 2015/06/18 02:15 | Hiroyasu Ehara v Koichi Sano | 6-1,6-3 |
| ITF Japan F7 | 2015/06/17 01:30 | Hiroyasu Ehara v Yuichiro Inui | 6-4,6-0 |
| ITF Korea F1 | 2015/05/22 04:00 | Hiroyasu Ehara v Min Hyeok Cho | 0-6,0-6 |
| ITF Korea F1 | 2015/05/21 07:45 | Ho-Min Kang v Hiroyasu Ehara | 1-6,7-6,3-6 |
| ITF Korea F1 | 2015/05/19 05:05 | Hiroyasu Ehara v Marcos Giron | 2-6,7-5,7-5 |
| ITF Greece F9 | 2015/04/30 08:50 | Hiroyasu Ehara v Giacomo Miccini | 2-6,3-6 |
| ITF Japan F7 | 2015/06/20 01:00 | Yusuke Watanuki v Ju-Hae Moon | 6-2,7-6 |
| ITF Japan F7 | 2015/06/19 03:00 | Hiromasa Oku v Yusuke Watanuki | 2-6,3-6 |
| ITF Japan F7 | 2015/06/18 00:30 | Tetsuro Habusawa v Yusuke Watanuki | 4-6,2-6 |
| ITF Japan F7 | 2015/06/16 00:30 | Ko Suzuki v Yusuke Watanuki | 0-6,2-6 |
| ITF Japan F6 | 2015/06/11 01:00 | Yusuke Watanuki v Takashi Saito | 6-3,6-7,3-6 |
| ITF Japan F6 | 2015/06/09 04:00 | Yusuke Watanuki v Renta Tokuda | 7-5,2-6,6-2 |
| ITF Japan F4 | 2015/04/02 01:00 | Hiroyasu Ehara v Yusuke Watanuki | 6-3,2-6,6-2 |
| ITF Japan F4 | 2015/04/01 01:00 | Jumpei Yamasaki v Yusuke Watanuki | 6-7,3-6 |