Estadio: Südwestbank 1 Round: 26 Ground: Carpet indoor
| ITF Alemania F1 | 2018/01/10 12:20 | Elmar Ejupovic v Volodymyr Uzhylovskyi | 6-2,6-2 |
| ITF República Checa F12 | 2017/11/29 14:10 | Elmar Ejupovic v Daniel Lustig | 3-6,2-6 |
| ITF República Checa F10 | 2017/11/17 14:30 | Marek Jaloviec v Elmar Ejupovic | 6-3,5-7,6-4 |
| ITF República Checa F10 | 2017/11/16 10:40 | Michael Vrbensky v Elmar Ejupovic | 2-6,2-6 |
| ITF República Checa F10 | 2017/11/15 09:00 | Victor Ouvrard v Elmar Ejupovic | 6-7,5-7 |
| ITF República Checa F9 | 2017/11/10 09:30 | Marek Jaloviec v Elmar Ejupovic | 7-6,6-4 |
| ITF República Checa F9 | 2017/11/09 13:25 | Dominik Boehler v Elmar Ejupovic | 2-6,4-6 |
| ITF República Checa F9 | 2017/11/08 09:00 | Filip Duda v Elmar Ejupovic | 4-6,4-6 |
| ITF Alemania F1 | 2018/01/10 11:45 | Stefan Seifert v Kai Lemstra | 6-2,6-7,4-6 |
| ITF Alemania F1 | 2018/01/08 12:30 | Karlo Cubelic v Kai Lemstra | 6-4,2-6,4-6 |
| ITF Alemania F1 | 2018/01/07 11:30 | Tim Heger v Kai Lemstra | 4-6,4-6 |
| Challenger de Eckental - Clasificación | 2017/10/28 13:30 | Benjamin Hassan v Kai Lemstra | 7-5,7-6 |
| ITF Alemania F16 | 2017/10/22 08:00 | Kai Lemstra v Tim Seibert | 3-6,1-6 |
| Challenger de Ismaning - Clasificación | 2017/10/15 12:20 | Kai Lemstra v Farrukh Dustov | 3-6,6-3,3-6 |
| Challenger de Ismaning - Clasificación | 2017/10/14 15:05 | Sven Lemstra v Kai Lemstra | 2-6,0-6 |
| ITF Alemania F14 | 2017/10/12 10:00 | Sami Reinwein v Kai Lemstra | 3-6,6-2,6-4 |