| ITF Australia F7 | 10/08 03:00 | 26 | Yusuke Watanuki v Finn Tearney | 6-1,1-6,3-6 | |
| ITF Australia F7 | 10/07 01:15 | 25 | Yusuke Watanuki v Daniel Nolan | 6-1,6-3 | |
| ITF Australia F6 | 10/01 03:10 | 27 | Robin Stanek v Yusuke Watanuki | 6-3,7-6 | |
| ITF Australia F6 | 09/30 03:30 | 26 | Thomas Fancutt v Yusuke Watanuki | 4-6,2-6 | |
| ITF Australia F6 | 09/29 02:20 | 25 | Daniel Hobart v Yusuke Watanuki | 6-4,6-7,1-6 | |
| ITF Japan F8 | 06/24 02:45 | - | Ko Suzuki v Yusuke Watanuki | 6-3,6-4 | |
| ITF Japan F7 | 06/21 02:00 | - | Hiroyasu Ehara v Yusuke Watanuki | 7-5,4-6,2-6 | |
| ITF Japan F7 | 06/20 01:00 | - | Yusuke Watanuki v Ju-Hae Moon | 6-2,7-6 | |
| ITF Japan F7 | 06/19 03:00 | - | Hiromasa Oku v Yusuke Watanuki | 2-6,3-6 | |
| ITF Japan F7 | 06/18 00:30 | - | Tetsuro Habusawa v Yusuke Watanuki | 4-6,2-6 | |
| ITF Japan F7 | 06/16 00:30 | - | Ko Suzuki v Yusuke Watanuki | 0-6,2-6 | |
| ITF Japan F6 | 06/11 01:00 | - | Yusuke Watanuki v Takashi Saito | 6-3,6-7,3-6 | |
| ITF Japan F6 | 06/09 04:00 | - | Yusuke Watanuki v Renta Tokuda | 7-5,2-6,6-2 | |
| ITF Japan F4 | 04/02 01:00 | - | Hiroyasu Ehara v Yusuke Watanuki | 6-3,2-6,6-2 | |
| ITF Japan F4 | 04/01 01:00 | - | Jumpei Yamasaki v Yusuke Watanuki | 6-7,3-6 | |
| ITF Japan F4 | 03/31 01:00 | - | Akira Santillan v Yusuke Watanuki | 4-6,6-0,5-7 | |
| ITF Japan F3 | 03/24 02:10 | - | Yusuke Watanuki v Shuichi Sekiguchi | 1-6,3-6 | |
| ITF Tunisia F5 | 02/05 10:20 | - | Yusuke Watanuki v Marko Tepavac | 3-6,0-6 | |
| ITF Tunisia F5 | 02/03 08:30 | - | Yusuke Watanuki v Pietro Licciardi | 6-3,6-7,6-2 | |
| ITF Tunisia F5 | 01/30 10:30 | - | Yusuke Watanuki v Jaime Pulgar-Garcia | 2-6,4-6 | |
| ITF Tunisia F5 | 01/29 12:00 | - | Yusuke Watanuki v Andrea Basso | 7-6,6-3 | |
| ITF Tunisia F5 | 01/27 09:45 | - | Gianluca Mager v Yusuke Watanuki | 6-7,2-6 | |
| ITF Tunisia F2 | 01/22 12:05 | - | Petar Conkic v Yusuke Watanuki | 6-3,0-6,6-4 | |
| ITF Tunisia F2 | 01/20 11:40 | - | Simone Roncalli v Yusuke Watanuki | 4-6,2-6 | |
| ITF Turkey F36 | 10/16 07:00 | - | Ben Mclachlan v Yusuke Watanuki | 6-4,6-2 | |
| ITF Turkey F36 | 10/15 08:15 | - | Rogelio Siller v Yusuke Watanuki | 2-6,1-6 | |
| ITF Turkey F35 | 10/10 08:50 | - | Yusuke Watanuki v Weiqiang Zheng | Retired | |
| ITF Turkey F35 | 10/09 07:00 | - | Yusuke Watanuki v Rogelio Siller | 6-1,6-4 | |
| ITF Japan F6 | 06/13 03:25 | - | Takashi Saito v Yusuke Watanuki | 7-6,6-2 | |
| ITF Japan F6 | 06/11 07:10 | - | Renta Tokuda v Yusuke Watanuki | 2-6,2-6 |