Round: 54 Ground: Hardcourt indoor
| 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 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 France F21 Qual | 2017/09/23 07:30 | Tim Van Der Horst v Louis Van Herck | 6-3,6-3 |
| ITF Netherlands F7 | 2017/08/26 08:00 | Tim Van Der Horst v Pelle Boerma | 6-3,3-6,1-6 |
| ITF Netherlands F6 | 2017/08/22 12:15 | Tim Van Der Horst v Robin Stanek | 1-6,2-6 |
| ITF Netherlands F6 | 2017/08/19 10:00 | Tim Van Der Horst v Lucas Hellfritsch | 6-3,6-3 |
| ITF Netherlands F6 | 2017/08/19 08:00 | Tim Van Der Horst v Leonard Von Hindte | 7-6,4-6,6-3 |
| ITF Netherlands F5 | 2017/08/14 12:00 | Stephan Fransen v Tim Van Der Horst | 6-1,6-1 |
| ITF Netherlands F5 | 2017/08/13 11:00 | Daniel Rabas v Tim Van Der Horst | 3-6,3-6 |
| ITF Belgium F8 Qual | 2017/08/06 08:00 | Tim Van Der Horst v Benjamin Pietri | 6-4,3-6,6-7 |