Stadium: Court 2 Round: 25 Ground: Clay
| ITF Germany F12 | 2017/08/21 08:00 | Kai Lemstra v Robin Peham | 6-2,4-6,7-6 |
| ITF Germany F12 | 2017/08/20 08:00 | Kai Lemstra v Anton Chekhov | 6-2,2-6,6-1 |
| ITF Germany F11 | 2017/08/17 13:45 | Kai Lemstra v Daniel Kopeinigg | 6-7,2-6 |
| ITF Germany F11 | 2017/08/15 10:30 | Corrado Summaria v Kai Lemstra | 4-6,5-7 |
| ITF Austria F6 | 2017/08/05 10:00 | Kai Lemstra v Paolo Dagnino | 4-6,2-6 |
| ITF Austria F5 | 2017/07/31 08:00 | Alen Rogic-Hadzalic v Kai Lemstra | 1-6,6-0,6-4 |
| ITF Austria F5 | 2017/07/30 08:00 | Bernie Schranz v Kai Lemstra | 0-6,5-7 |
| ITF Austria F5 | 2017/07/29 08:00 | Philip Aplienz v Kai Lemstra | 2-6,1-6 |
| ITF Germany F12 | 2017/08/20 08:00 | Robin Lang v Ramazan Nureev | 6-4,6-1 |
| ITF Germany F11 | 2017/08/16 16:05 | Florian Fallert v Robin Lang | 6-1,6-3 |
| ITF Germany F11 | 2017/08/14 09:00 | Robin Lang v Joel Vincent Link | 7-6,6-0 |
| ITF Germany F11 | 2017/08/13 13:00 | Robin Lang v Adriano Quinti | 6-4,6-0 |
| ITF Germany F10 | 2017/08/07 10:00 | Tejas Chaukulkar v Robin Lang | 7-5,6-4 |
| ITF Germany F10 | 2017/08/06 13:00 | Niklas Guttau v Robin Lang | 2-6,6-4,3-6 |
| ITF Germany F4 | 2017/06/18 08:00 | Robin Lang v Leon Hoeveler | 0-6,5-7 |
| ITF Czech Republic F3 Qual | 2017/05/27 10:00 | Robin Lang v Tomas Liska | 0-6,4-6 |