Stadium: Court 6 Round: 25 Ground: Clay
| ITF Germany F10 | 2017/08/07 10:00 | Maxence Beauge v Nico Mertens | 3-6,3-6 |
| ITF Germany F10 | 2017/08/06 13:00 | David Mrazek v Nico Mertens | 4-6,6-7 |
| ITF Germany F10 | 2017/08/06 08:00 | Pavle Daljev v Nico Mertens | 6-3,3-6,3-6 |
| ITF Germany F9 | 2017/08/01 12:55 | Nico Mertens v Florian Fallert | 4-6,1-6 |
| ITF Germany F9 | 2017/07/31 15:00 | Roy Sarut De Valk v Nico Mertens | 2-6,6-7 |
| ITF Germany F8 Qual | 2017/07/17 13:00 | Nico Mertens v Matthew Dellavedova | 6-1,2-6,2-6 |
| ITF Germany F8 Qual | 2017/07/16 08:00 | Nico Mertens v James Markiewicz | 2-6,6-3,6-4 |
| ITF Belgium F1 | 2017/06/22 16:00 | Clement Geens v Nico Mertens | 7-5,6-4 |
| ITF Germany F10 | 2017/08/07 14:00 | Benjamin Hassan v Florian Broska | 6-2,6-2 |
| ITF Germany F10 | 2017/08/06 08:00 | Benjamin Hassan v Lucas Hellfritsch | 6-3,6-4 |
| ITF Germany F9 | 2017/07/31 14:00 | Benjamin Hassan v Lucas Gerch | 7-5,2-6,1-6 |
| ITF Germany F9 | 2017/07/31 09:00 | Benjamin Hassan v Raphael Calzi | 6-3,6-2 |
| ITF Germany F9 | 2017/07/30 08:00 | Benjamin Hassan v Nikolas Walterscheid-Tukic | 6-2,6-2 |
| ITF Germany F8 | 2017/07/19 11:50 | Benjamin Hassan v Christopher Heyman | 6-3,4-6,2-6 |
| ITF Germany F8 Qual | 2017/07/17 11:20 | Benjamin Hassan v Caspar Schuetze | 7-5,6-4 |
| ITF Germany F8 Qual | 2017/07/16 11:00 | Benjamin Hassan v Yohei Otsuka | 6-0,6-1 |