Round: 25 Ground: Synthetic outdoor
| ITF Japan F5 | 2016/04/06 04:15 | Shiga, Masato v Watanuki, Yusuke | 7-6,6-4 |
| ITF Japan F1 | 2016/03/10 02:45 | Nagao, Katsuki v Watanuki, Yusuke | 1-6,6-2,1-6 |
| ITF Turkey F5 | 2016/02/03 08:00 | Gigounon, Germain v Watanuki, Yusuke | 6-1,4-6,6-4 |
| ITF Turkey F4 | 2016/01/26 11:05 | Watanuki, Yusuke v Tallon Griekspoor | 3-6,1-6 |
| ITF Turkey F3 | 2016/01/22 13:40 | Joris De Loore v Watanuki, Yusuke | 6-3,6-0 |
| ITF Turkey F3 | 2016/01/22 09:00 | Altug Celikbilek v Watanuki, Yusuke | 3-6,6-7 |
| ITF Turkey F3 | 2016/01/19 08:00 | Wagner, Hannes v Watanuki, Yusuke | 5-7,1-6 |
| ITF Australia F7 | 2015/10/08 03:00 | Watanuki, Yusuke v Tearney, Finn | 6-1,1-6,3-6 |
| ITF Japan F7 Qual | 2016/06/05 01:00 | Takeshima, Shunrou v Ryotaro Matsumura | 5-7,1-6 |
| ITF Japan F7 Qual | 2016/06/04 01:00 | Takeshima, Shunrou v Tomohiro Masabayashi | 6-2,6-2 |
| ITF Japan F6 Qual | 2016/05/29 01:00 | Renta Tokuda v Takeshima, Shunrou | 3-6,6-2,6-2 |
| ITF Japan F6 Qual | 2016/05/28 01:00 | Daisuke Sumizawa v Takeshima, Shunrou | 3-6,2-6 |
| ITF Guam F1 | 2016/05/26 02:25 | Kikuchi, Gengo v Takeshima, Shunrou | 6-1,6-1 |
| ITF Guam F1 | 2016/05/24 02:00 | Oku, Hiromasa v Takeshima, Shunrou | 3-6,2-6 |
| ITF Guam F1 | 2016/05/22 01:00 | Takeshima, Shunrou v Takahiro Kubo | 6-1,6-1 |
| ITF China F6 Qual | 2016/05/07 03:30 | Peng, Changwei v Takeshima, Shunrou | 2-6,7-5,6-2 |