Stadium: Court 2 Round: 26 Ground: Clay
| 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 Netherlands F7 | 2017/09/01 13:00 | Nick Chappell v Nico Mertens | 6-2,6-4 |
| ITF Netherlands F7 | 2017/08/30 11:00 | Paul Monteban v Nico Mertens | 3-6,5-7 |
| ITF Netherlands F7 | 2017/08/29 09:10 | Nico Mertens v David Pichler | 6-3,6-4 |
| ITF Netherlands F6 | 2017/08/22 09:30 | Nico Mertens v Pascal Meis | 6-7,4-6 |
| ITF Netherlands F6 | 2017/08/20 09:00 | Linus Krohn v Nico Mertens | 2-6,6-3,0-6 |
| ITF Belgium F12 | 2017/09/05 11:55 | Niels Desein v Billy Harris | 6-3,6-2 |
| ITF Hungary F6 | 2017/08/25 12:00 | Attila Balazs v Niels Desein | 7-6,7-5 |
| ITF Hungary F6 | 2017/08/22 11:35 | Niels Desein v Mike Urbanija | 6-1,6-0 |
| ITF Belgium F9 | 2017/08/19 12:00 | Niels Desein v Julien Cagnina | 4-6,2-6 |
| ITF Belgium F9 | 2017/08/18 12:35 | Niels Desein v Marcelo Plaza | 6-3,6-2 |
| ITF Belgium F9 | 2017/08/17 10:00 | Maxime Authom v Niels Desein | 3-6,1-6 |
| ITF Belgium F9 | 2017/08/15 10:45 | Arnaud Graisse v Niels Desein | 2-6,0-6 |
| ITF Belgium F7 | 2017/08/01 09:40 | Guy Den Heijer v Niels Desein | 6-4,2-6,6-2 |