Stadium: C Round: 28
| ITF Portugal F11 | 2016/09/28 13:35 | Yannick Mertens v Joao Monteiro | 6-3,6-4 |
| ITF Portugal F15 | 2017/08/13 15:00 | Joao Monteiro v Sergio Gutierrez-Ferrol | 4-6,0-6 |
| ITF Portugal F15 | 2017/08/12 12:20 | Joao Monteiro v Rafael Matos | 7-5,6-3 |
| ITF Portugal F15 | 2017/08/11 13:10 | Joao Monteiro v Jaume Pla Malfeito | 4-6,6-4,6-1 |
| ITF Portugal F15 | 2017/08/10 13:55 | Joao Monteiro v Victor Poncelet | 6-3,6-7,6-4 |
| ITF Portugal F15 | 2017/08/09 12:25 | Joao Monteiro v Alexandre Ribeiro | 6-2,6-0 |
| ITF Portugal F14 | 2017/08/06 13:30 | Javier Marti v Joao Monteiro | 2-6,5-7 |
| ITF Portugal F14 | 2017/08/05 12:35 | Makoto Ochi v Joao Monteiro | 1-6,6-7 |
| ITF Portugal F14 | 2017/08/04 13:00 | Sergio Gutierrez-Ferrol v Joao Monteiro | 4-6,6-4,4-6 |
| ITF Germany F10 | 2017/08/08 12:40 | Yannick Mertens v George Von Massow | 3-6,4-6 |
| Challenger Segovia | 2017/08/01 08:00 | Goncalo Oliveira v Yannick Mertens | 6-3,3-6,6-4 |
| ATP Gstaad Qual | 2017/07/22 10:10 | Yannick Mertens v Gleb Sakharov | 4-6,5-7 |
| Challenger Scheveningen | 2017/07/18 11:40 | Botic Van De Zandschulp v Yannick Mertens | 4-6,6-3,6-2 |
| ITF France F15 | 2017/07/10 18:00 | Yannick Mertens v Edoardo Eremin | 5-7,2-6 |
| Challenger Recanati | 2017/07/05 15:30 | Yannick Mertens v Quentin Halys | 1-6,4-6 |
| Challenger Recanati | 2017/07/04 08:30 | Yannick Mertens v Dmitry Popko | 3-6,6-3,7-6 |
| ATP Antalya Qual | 2017/06/25 10:10 | Ramkumar Ramanathan v Yannick Mertens | 6-3,6-4 |