Ground: Synthetic outdoor
| ITF Japan F7 | 2015/06/17 01:00 | Habusawa, Tetsuro v Ushida, Atsushi | 6-7,7-5,6-4 |
| ITF Japan F3 | 2015/03/22 01:00 | Habusawa, Tetsuro v Ono, Yohei | 1-6,2-6 |
| ITF Japan F8 | 2014/06/22 03:00 | Sasai, Masaki v Habusawa, Tetsuro | 6-1,6-0 |
| ITF Japan F7 | 2014/06/18 00:30 | Kibi, Yuya v Habusawa, Tetsuro | 6-1,6-4 |
| ITF Japan F7 | 2015/06/16 00:30 | Ko Suzuki v Watanuki, Yusuke | 0-6,2-6 |
| ITF Japan F6 | 2015/06/11 01:00 | Watanuki, Yusuke v Saito, Takashi | 6-3,6-7,3-6 |
| ITF Japan F6 | 2015/06/09 04:00 | Watanuki, Yusuke v Renta Tokuda | 7-5,2-6,6-2 |
| ITF Japan F4 | 2015/04/02 01:00 | Ehara, Hiroyasu v Watanuki, Yusuke | 6-3,2-6,6-2 |
| ITF Japan F4 | 2015/04/01 01:00 | Jumpei Yamasaki v Watanuki, Yusuke | 6-7,3-6 |
| ITF Japan F4 | 2015/03/31 01:00 | Akira Santillan v Watanuki, Yusuke | 4-6,6-0,5-7 |
| ITF Japan F3 | 2015/03/24 02:10 | Watanuki, Yusuke v Sekiguchi, Shuichi | 1-6,3-6 |
| ITF Tunisia F5 | 2015/02/05 10:20 | Watanuki, Yusuke v Tepavac, Marko | 3-6,0-6 |