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 Walder, Jordi | 4-6,2-6 |
| Challenger - Augsburg | 2019/08/05 12:25 | Facundo Mena v Kai Lemstra | 6-4,6-2 |
| Bad Schussenried, Singles Qualifying M-ITF-GER-10A | 2019/07/23 14:35 | Nik Razborsek v Kai Lemstra | 6-2,6-3 |
| Bad Schussenried, Singles Qualifying M-ITF-GER-10A | 2019/07/22 13:00 | de Valk, Roy Sarut v Kai Lemstra | 5-7,4-6 |
| Bad Schussenried, Singles Qualifying M-ITF-GER-10A | 2019/07/22 08:00 | Kunz, Giordan v Kai Lemstra | 1-6,1-6 |
| Kramsach, Singles M-ITF-AUT-02A | 2019/07/17 09:00 | Kai Lemstra v van Den Berg, Bart | 4-6,2-6 |
| Kramsach, Singles M-ITF-AUT-02A | 2019/07/15 13:30 | Kai Lemstra v Holis, Evzen | 6-3,4-6,10-6 |
| Bad Salzdetfurth, Simples M-ITF-GER-14A | 2019/10/07 11:40 | Azevedo Pereira E Oliveira, Bernardo v Patzanovsky, Christopher | 2-6,4-6 |
| ITF - M15 Antalya | 2019/09/22 07:00 | Michalis Sakellaridis v Patzanovsky, Christopher | 6-0,7-6 |
| ITF - M15 Antalya | 2019/09/17 07:00 | Muscheites, Lasse v Patzanovsky, Christopher | 4-6,7-5,8-10 |
| ITF - M15 Antalya | 2019/09/16 07:30 | Stoica, Vlad v Patzanovsky, Christopher | 2-6,4-6 |
| ITF M15 Bratislava | 2019/08/28 10:15 | Minarik, Kristof v Patzanovsky, Christopher | 2-6,6-4,7-5 |
| ITF M15 Bratislava | 2019/08/27 08:00 | Patzanovsky, Christopher v Petr Michnev | 1-6,7-6,12-10 |
| ITF M15 Bratislava | 2019/08/26 08:00 | Michael Gloeckler v Patzanovsky, Christopher | 4-6,5-7 |
| ITF M15 Bratislava | 2019/08/25 08:00 | Patzanovsky, Christopher v Skonieczny, Michal | 6-2,6-4 |