Stadium: Kvarner 5 Round: 60 Ground: Clay
| Challenger Eckental Qual | 2017/10/28 13:30 | Benjamin Hassan v Kai Lemstra | 7-5,7-6 |
| ITF Germany F16 | 2017/10/22 08:00 | Kai Lemstra v Tim Seibert | 3-6,1-6 |
| Challenger Ismaning Qual | 2017/10/15 12:20 | Kai Lemstra v Farrukh Dustov | 3-6,6-3,3-6 |
| Challenger Ismaning Qual | 2017/10/14 15:05 | Sven Lemstra v Kai Lemstra | 2-6,0-6 |
| ITF Germany F14 | 2017/10/12 10:00 | Sami Reinwein v Kai Lemstra | 3-6,6-2,6-4 |
| ITF Germany F14 | 2017/10/11 10:00 | Kai Lemstra v Danylo Kalenichenko | 6-4,6-3 |
| ITF Germany F12 | 2017/08/22 08:00 | Kai Lemstra v Robin Lang | 4-6,6-0,1-6 |
| ITF Germany F12 | 2017/08/21 08:00 | Kai Lemstra v Robin Peham | 6-2,4-6,7-6 |
| ITF Czech Republic F11 Qual | 2017/11/19 13:00 | Alessandro Ricci v Marcell Bartakovics | 7-6,7-6 |
| ITF Hungary F8 | 2017/09/06 11:30 | Zdenek Kolar v Marcell Bartakovics | 6-0,6-2 |
| ITF Hungary F8 | 2017/09/05 14:25 | Alexander Shevchenko v Marcell Bartakovics | 2-6,2-6 |
| ITF Hungary F8 Qual | 2017/09/04 09:00 | Daniel Kopeinigg v Marcell Bartakovics | 4-6,4-6 |
| ITF Hungary F8 Qual | 2017/09/03 07:30 | Patrik Jancovic v Marcell Bartakovics | 4-6,3-6 |
| ITF Hungary F7 | 2017/08/29 08:00 | Milan Drinic v Marcell Bartakovics | 6-2,1-6,7-6 |
| ITF Hungary F6 Qual | 2017/08/21 09:55 | Laszlo Szendroi v Marcell Bartakovics | 6-1,1-6,6-4 |
| ITF Hungary F6 Qual | 2017/08/20 09:00 | Peter Samosi v Marcell Bartakovics | 4-6,1-6 |