Stadium: Court 2 Round: 44 Ground: Hardcourt indoor
| ITF France F23 Qual | 2017/10/07 15:50 | Nico Mertens v Louis Dussin | 1-6,6-3,3-6 |
| ITF France F21 | 2017/09/25 11:50 | Benjamin Hassan v Nico Mertens | 6-4,6-1 |
| ITF France F21 Qual | 2017/09/24 08:00 | Nico Mertens v Tim Van Der Horst | 4-6,6-1,6-4 |
| ITF Belgium F12 | 2017/09/08 11:00 | Marvin Netuschil v Nico Mertens | 6-2,6-4 |
| ITF Belgium F12 | 2017/09/06 11:10 | Nico Mertens v Niels Desein | 6-1,1-6,7-6 |
| ITF Belgium F12 | 2017/09/05 11:45 | Nico Mertens v Dimitriy Voronin | 6-3,7-6 |
| ITF Belgium F12 Qual | 2017/09/04 09:00 | Hunter Johnson v Nico Mertens | 3-6,2-6 |
| ITF Belgium F12 Qual | 2017/09/03 08:00 | Aitor Aramburu v Nico Mertens | 0-6,3-6 |
| ITF Germany F4 | 2017/06/22 13:55 | Dominik Bartels v George Von Massow | 2-6,2-6 |
| ITF Germany F4 | 2017/06/20 09:00 | Dominik Bartels v Florian Broska | 4-6,7-6,6-0 |
| ITF Germany F14 | 2016/10/09 07:00 | Dominik Bartels v Garry Tokas | 6-1,6-0 |
| ITF Germany F14 | 2016/10/09 07:00 | Raphael Baltensperger v Dominik Bartels | 6-3,6-3 |