Ground: Hardcourt outdoor
| ITF Japan F3 | 2014/03/29 03:30 | Hiroyasu Ehara v Yusuke Watanuki | 1-6,3-6 |
| ITF Japan F4 | 2015/04/01 01:00 | Di Wu v Hiroyasu Ehara | 2-6,0-6 |
| ITF Japan F3 | 2015/03/26 03:45 | Hiroyasu Ehara v Takuto Niki | 6-4,3-6,3-6 |
| ITF Japan F3 | 2015/03/25 01:00 | Hiroyasu Ehara v Luca Pancaldi | 7-5,6-3 |
| ITF Japan F2 | 2015/03/21 03:20 | Takuto Niki v Hiroyasu Ehara | 6-3,6-7,6-2 |
| ITF Japan F2 | 2015/03/20 01:30 | Duckhee Lee v Hiroyasu Ehara | 1-6,6-4,3-6 |
| ITF Japan F2 | 2015/03/18 02:40 | Yutaro Matsuzaki v Hiroyasu Ehara | 4-6,6-4,3-6 |
| ITF Japan F2 | 2015/03/17 04:50 | Shohei Chikami v Hiroyasu Ehara | 6-7,2-6 |
| ITF Japan F1 | 2015/03/11 03:05 | Luca Pancaldi v Hiroyasu Ehara | 7-5,7-6 |
| ITF Japan F4 | 2015/04/01 01:00 | Jumpei Yamasaki v Yusuke Watanuki | 6-7,3-6 |
| ITF Japan F4 | 2015/03/31 01:00 | Akira Santillan v Yusuke Watanuki | 4-6,6-0,5-7 |
| ITF Japan F3 | 2015/03/24 02:10 | Yusuke Watanuki v Shuichi Sekiguchi | 1-6,3-6 |
| ITF Tunisia F5 | 2015/02/05 10:20 | Yusuke Watanuki v Marko Tepavac | 3-6,0-6 |
| ITF Tunisia F5 | 2015/02/03 08:30 | Yusuke Watanuki v Pietro Licciardi | 6-3,6-7,6-2 |
| ITF Tunisia F5 | 2015/01/30 10:30 | Yusuke Watanuki v Jaime Pulgar-Garcia | 2-6,4-6 |
| ITF Tunisia F5 | 2015/01/29 12:00 | Yusuke Watanuki v Andrea Basso | 7-6,6-3 |
| ITF Tunisia F5 | 2015/01/27 09:45 | Gianluca Mager v Yusuke Watanuki | 6-7,2-6 |