Stadium: Hard 4 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Troisdorf | 2019/05/09 08:00 | Kai Wehnelt v Constantin Schmitz | 2-6,2-6 |
| ITF M15 Lambermont | 2019/08/23 13:30 | Mathieu Perchicot v Constantin Schmitz | 6-2,6-1 |
| ITF M15 Lambermont | 2019/08/22 11:45 | Nicolas Uryson v Constantin Schmitz | 3-6,0-6 |
| ITF M15 Lambermont | 2019/08/21 13:20 | Tom Pisane v Constantin Schmitz | 4-6,3-6 |
| ITF M15 Trier | 2019/08/17 09:00 | Adrian Obert v Constantin Schmitz | 6-4,6-3 |
| ITF M15 Trier | 2019/08/16 12:00 | Dominik Boehler v Constantin Schmitz | 1-6,6-4,2-6 |
| ITF M15 Trier | 2019/08/15 12:00 | Constantin Schmitz v Niklas Schell | 6-3,6-4 |
| ITF M15 Trier | 2019/08/14 10:00 | Constantin Schmitz v Hasan Ibrahim | 6-3,6-2 |
| ITF M15 Trier | 2019/08/13 11:05 | Constantin Schmitz v Tim Handel | 6-1,6-2 |
| ITF M15 Heraklion | 2020/02/19 10:00 | Kai Wehnelt v Omar Giacalone | 6-7,6-1,6-7 |
| ITF M15 Heraklion | 2020/02/12 12:10 | Kai Wehnelt v Clement Geens | 2-6,2-6 |
| ITF M25 Nussloch | 2020/01/22 14:40 | Giulio Zeppieri v Kai Wehnelt | 6-3,7-6 |
| ITF M25 Nussloch | 2020/01/20 19:55 | Kai Wehnelt v Adrian Bodmer | 1-6,3-6 |
| ITF M25 Nussloch | 2020/01/20 13:20 | Kai Wehnelt v Christopher Patzanovsky | 6-3,6-3 |
| ITF M25 Nussloch | 2020/01/19 09:00 | Kai Wehnelt v Laurin Aerne | 6-2,6-0 |
| ITF M15 Monastir | 2019/12/03 08:30 | Erik Crepaldi v Kai Wehnelt | 5-7,6-2,6-2 |
| ITF M15 Monastir | 2019/11/29 08:30 | Kai Wehnelt v Mattia Frinzi | 3-6,5-7 |