Round: 26 Ground: Hardcourt outdoor
| ITF Spain F24 | 2016/08/02 15:00 | Yannick Mertens v Alejandro O Palacios | 5-7,6-1,6-2 |
| Challenger Segovia | 2016/07/27 11:05 | Yannick Mertens v Luca Vanni | 7-6,0-6,3-6 |
| Challenger Segovia | 2016/07/26 08:30 | Yannick Mertens v Pablo Vivero Gonzalez | 6-4,6-2 |
| Challenger Recanati | 2016/07/19 11:45 | Adrian Menendez-Maceiras v Yannick Mertens | 6-1,6-2 |
| ITF Belgium F5 | 2016/07/17 13:00 | Ruben Bemelmans v Yannick Mertens | 6-3,6-7,6-1 |
| ITF Belgium F5 | 2016/07/16 14:00 | Maxime Authom v Yannick Mertens | 3-6,2-6 |
| ITF Belgium F5 | 2016/07/15 12:10 | Alexandre Folie v Yannick Mertens | 4-6,6-7 |
| ITF Belgium F5 | 2016/07/14 08:00 | Maxime Pauwels v Yannick Mertens | 3-6,3-6 |
| ITF Spain F24 | 2016/08/02 18:30 | Yusuke Watanuki v Manuel Montalvo Hidalgo | 6-4,6-1 |
| ITF Japan F8 | 2016/06/19 02:00 | Gengo Kikuchi v Yusuke Watanuki | 4-6,7-6,6-0 |
| ITF Japan F8 | 2016/06/18 03:15 | Yusuke Watanuki v Renta Tokuda | 7-5,6-2 |
| ITF Japan F8 | 2016/06/17 03:40 | Sho Shimabukuro v Yusuke Watanuki | 6-7,1-6 |
| ITF Japan F8 | 2016/06/16 03:20 | Yuta Shimizu v Yusuke Watanuki | 3-6,6-3,4-6 |
| ITF Japan F7 | 2016/06/10 01:00 | Yusuke Watanuki v Evan King | 5-7,4-6 |
| ITF Japan F7 | 2016/06/09 01:00 | Yusuke Watanuki v Ryota Tanuma | 6-0,6-2 |
| ITF Japan F7 | 2016/06/06 04:40 | Yusuke Watanuki v Shunrou Takeshima | 7-5,6-4 |