Stadium: Sparkassen Court Round: 27 Ground: Clay
| ITF Germany F13 | 2018/08/23 08:00 | Kai Wehnelt v Louis Wessels | 4-6,3-6 |
| ITF M15 Marburg | 2019/07/11 15:00 | Louis Wessels v Karlo Cubelic | 0-6,6-3,6-2 |
| ITF M15 Marburg | 2019/07/10 14:15 | Louis Wessels v Federico Moreno | 7-6,6-0 |
| ITF M15 Alkmaar | 2019/06/26 16:15 | Louis Wessels v Dax Donders | 4-6,6-7 |
| ATP Halle | 2019/06/15 09:00 | Louis Wessels v Miomir Kecmanovic | 4-6,2-6 |
| ITF M25 Karlsruhe | 2019/06/05 12:25 | Louis Wessels v Christian Lindell | 6-7,1-6 |
| ITF M15 Antalya | 2019/04/13 07:45 | Louis Wessels v Ronald Slobodchikov | 2-6,6-7 |
| ITF M15 Antalya | 2019/04/12 10:15 | Louis Wessels v Marsel Ilhan | 2-6,6-4,6-4 |
| ITF M15 Antalya | 2019/04/11 07:40 | Louis Wessels v Maxim Ratniuk | 7-5,6-4 |
| ITF M15 Marburg | 2019/07/11 15:00 | Ondrej Krstev v Kai Wehnelt | 3-6,4-6 |
| ITF M15 Marburg | 2019/07/09 09:00 | Marek Gengel v Kai Wehnelt | 2-6,4-6 |
| ITF M15 Troisdorf | 2019/05/09 08:00 | Kai Wehnelt v Constantin Schmitz | 2-6,2-6 |
| ITF M15 Troisdorf | 2019/05/07 08:00 | Mateo Nicolas Martinez v Kai Wehnelt | 6-0,6-7,2-6 |
| ITF M15 Cairo | 2019/05/03 10:20 | Adrian Andrzejczuk v Kai Wehnelt | 7-6,6-1 |
| ITF M15 Cairo | 2019/05/02 11:30 | Gauthier Onclin v Kai Wehnelt | 2-6,1-6 |
| ITF M15 Cairo | 2019/05/01 10:50 | Roman Blokhin v Kai Wehnelt | 6-2,4-6,3-6 |
| ITF M15 Cairo | 2019/04/24 12:00 | Manfred Fellin v Kai Wehnelt | 5-7,6-3,6-3 |