Ground: Synthetic outdoor
| 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 |
| ITF Japan F4 | 2015/03/31 01:00 | Akira Santillan v Yusuke Watanuki | 4-6,6-0,5-7 |
| ITF Japan F7 | 2015/06/19 03:00 | Ju-Hae Moon v Yuya Kibi | 6-4,7-5 |
| ITF Japan F7 | 2015/06/16 01:45 | Ju-Hae Moon v David Barclay | 6-2,6-2 |
| ITF Japan F7 Qual | 2015/06/14 00:00 | Ju-Hae Moon v Kennosuke Nouchi | 6-3,6-4 |
| ITF Japan F6 | 2015/06/09 05:00 | Ju-Hae Moon v Duckhee Lee | 1-6,1-6 |
| ITF Japan F6 Qual | 2015/06/08 01:00 | Soichiro Moritani v Ju-Hae Moon | 2-6,1-6 |