Round: 25 Ground: Clay
| ITF Japan F7 | 2015/06/18 00:30 | Habusawa, Tetsuro v Watanuki, Yusuke | 4-6,2-6 |
| ITF Japan F1 | 2017/03/04 03:30 | Masaya Kobayashi v Habusawa, Tetsuro | 6-2,6-4 |
| ITF Japan F8 | 2016/06/14 03:00 | Moritani, Soichiro v Habusawa, Tetsuro | 6-2,6-2 |
| ITF Guam F1 | 2016/05/22 02:00 | Habusawa, Tetsuro v Brooklyn, Matthew | 4-6,2-6 |
| ITF Japan F5 | 2016/04/03 02:00 | Ito, Yuya v Habusawa, Tetsuro | 6-0,6-0 |
| ITF Japan F3 | 2016/03/19 00:30 | Habusawa, Tetsuro v Ko Suzuki | 2-6,2-6 |
| ITF Japan F1 | 2016/03/05 01:00 | Mclachlan, Ben v Habusawa, Tetsuro | 6-2,6-0 |
| ITF Turkey F29 | 2015/07/11 08:00 | Mert Naci Turker v Habusawa, Tetsuro | 6-7,6-1,6-4 |
| ITF Japan F7 | 2015/06/18 00:30 | Habusawa, Tetsuro v Watanuki, Yusuke | 4-6,2-6 |
| ITF Japan F7 | 2017/06/06 01:00 | Niki, Takuto v Watanuki, Yusuke | 5-7,7-5,6-4 |
| ITF Japan F6 | 2017/05/29 05:50 | Watanuki, Yusuke v Shintaro Imai | 0-6,5-7 |
| ITF Japan F5 | 2017/04/09 03:30 | Watanuki, Yusuke v Shiga, Masato | 6-7,5-7 |
| ITF Japan F5 | 2017/04/09 03:00 | Watanuki, Yusuke v Shiga, Masato | 6-7,5-7 |
| ITF Japan F5 | 2017/04/07 04:30 | Watanuki, Yusuke v Shintaro Imai | 6-1,6-3 |
| ITF Japan F5 | 2017/04/05 00:30 | Suzuki, Takao v Watanuki, Yusuke | 2-6,1-6 |
| ITF Japan F5 | 2017/04/04 04:30 | Watanuki, Yusuke v Sasai, Masaki | 6-2,6-2 |
| ITF Japan F4 | 2017/03/28 03:00 | Watanuki, Yusuke v Jumpei Yamasaki | 7-6,4-6,6-7 |