Round: 26 Ground: Hardcourt outdoor
| ITF Japan F5 | 2014/06/04 01:00 | Gengo Kikuchi v Yusuke Watanuki | 2-6,6-4,6-4 |
| ITF Japan F1 | 2016/03/10 01:00 | Gengo Kikuchi v Yuqing Ning | 6-3,6-3 |
| ITF Japan F1 | 2016/03/07 01:00 | Gengo Kikuchi v Yuga Tashiro | 6-1,4-6,6-1 |
| ITF Japan F1 | 2016/03/06 01:00 | Gengo Kikuchi v Teppei Uesugi | 6-2,6-0 |
| ITF Japan F5 | 2015/06/02 01:00 | Shunrou Takeshima v Gengo Kikuchi | 7-5,6-4 |
| ITF Guam F1 | 2015/05/31 01:00 | Gengo Kikuchi v Takao Suzuki | 3-6,3-6 |
| ITF Guam F1 | 2015/05/30 04:20 | Gengo Kikuchi v Ko Suzuki | 6-2,6-3 |
| ITF Guam F1 | 2015/05/29 04:25 | Kelsey Stevenson v Gengo Kikuchi | 2-6,3-6 |
| ITF Guam F1 | 2015/05/28 01:15 | Ken Onoda v Gengo Kikuchi | 4-6,6-7 |
| ITF Japan F1 | 2016/03/10 02:45 | Katsuki Nagao v Yusuke Watanuki | 1-6,6-2,1-6 |
| ITF Turkey F5 | 2016/02/03 08:00 | Germain Gigounon v Yusuke Watanuki | 6-1,4-6,6-4 |
| ITF Turkey F4 | 2016/01/26 11:05 | Yusuke Watanuki v Tallon Griekspoor | 3-6,1-6 |
| ITF Turkey F3 | 2016/01/22 13:40 | Joris De Loore v Yusuke Watanuki | 6-3,6-0 |
| ITF Turkey F3 | 2016/01/22 09:00 | Altug Celikbilek v Yusuke Watanuki | 3-6,6-7 |
| ITF Turkey F3 | 2016/01/19 08:00 | Hannes Wagner v Yusuke Watanuki | 5-7,1-6 |
| ITF Australia F7 | 2015/10/08 03:00 | Yusuke Watanuki v Finn Tearney | 6-1,1-6,3-6 |
| ITF Australia F7 | 2015/10/07 01:15 | Yusuke Watanuki v Daniel Nolan | 6-1,6-3 |