Stadium: Court 1 Round: 54 Ground: Carpet indoor
| ITF M15 Ueberlingen | 2019/08/21 09:55 | Peter Heller v Kai Lemstra | 5-7,6-2,6-2 |
| ITF M15 Trier | 2019/08/13 11:05 | Kai Lemstra v Jordi Walder | 4-6,2-6 |
| Challenger Augsburg | 2019/08/05 12:25 | Facundo Mena v Kai Lemstra | 6-4,6-2 |
| ITF M15 Bad Schussenried | 2019/07/23 14:35 | Nik Razborsek v Kai Lemstra | 6-2,6-3 |
| ITF M15 Bad Schussenried | 2019/07/22 13:00 | Roy Sarut De Valk v Kai Lemstra | 5-7,4-6 |
| ITF M15 Bad Schussenried | 2019/07/22 08:00 | Giordan Kunz v Kai Lemstra | 1-6,1-6 |
| ITF M15 Kramsach | 2019/07/17 09:00 | Kai Lemstra v Bart Van Den Berg | 4-6,2-6 |
| ITF M15 Kramsach | 2019/07/15 13:30 | Kai Lemstra v Evzen Holis | 6-3,4-6,10-6 |
| ITF M15 Bad Salzdetfurth | 2019/10/07 11:40 | Bernardo A P E Oliveira v Christopher Patzanovsky | 2-6,4-6 |
| ITF M15 Antalya | 2019/09/22 07:00 | Michalis Sakellaridis v Christopher Patzanovsky | 6-0,7-6 |
| ITF M15 Antalya | 2019/09/17 07:00 | Lasse Muscheites v Christopher Patzanovsky | 4-6,7-5,8-10 |
| ITF M15 Antalya | 2019/09/16 07:30 | Vlad Stoica v Christopher Patzanovsky | 2-6,4-6 |
| ITF M15 Bratislava | 2019/08/28 10:15 | Kristof Minarik v Christopher Patzanovsky | 2-6,6-4,7-5 |
| ITF M15 Bratislava | 2019/08/27 08:00 | Christopher Patzanovsky v Petr Michnev | 1-6,7-6,12-10 |
| ITF M15 Bratislava | 2019/08/26 08:00 | Michael Gloeckler v Christopher Patzanovsky | 4-6,5-7 |
| ITF M15 Bratislava | 2019/08/25 08:00 | Christopher Patzanovsky v Michal Skonieczny | 6-2,6-4 |