Stadium: Court 2 Round: 26 Ground: Hardcourt indoor
| ITF - M15 Ueberlingen | 2019/08/24 10:00 | Kai Wehnelt v Louis Wessels | 3-6,0-6 |
| ITF M15 Marburg | 2019/07/12 09:40 | Louis Wessels v Kai Wehnelt | 6-2,7-6 |
| ITF Germany F13 | 2018/08/23 08:00 | Kai Wehnelt v Louis Wessels | 4-6,3-6 |
| ITF - M25 Hamburg | 2021/10/20 08:00 | Louis Wessels v Jeremy Jahn | 6-1,7-6 |
| Challenger - Napoli | 2021/10/11 08:30 | Louis Wessels v Alvaro Lopez San Martin | 6-7,4-6 |
| ITF - M25 Skopje | 2021/10/03 09:00 | Louis Wessels v Matteo Arnaldi | 1-6,0-6 |
| ITF - M25 Skopje | 2021/10/02 09:30 | Aldin Setkic v Louis Wessels | 2-6,7-6,3-6 |
| ITF - M25 Skopje | 2021/10/01 14:30 | Louis Wessels v Clement Tabur | 7-5,6-1 |
| ITF - M25 Skopje | 2021/10/01 08:00 | Louis Wessels v Besir Durguti | 6-0,6-1 |
| ITF - M25 Skopje | 2021/09/29 09:40 | Louis Wessels v Felix Gill | 6-1,6-2 |
| ITF - M25 Madrid | 2021/09/19 08:50 | Luca Nardi v Louis Wessels | 7-5,6-2 |
| ITF - M25 Hamburg | 2021/10/20 08:00 | Kai Wehnelt v Markus Eriksson | 6-4,7-5 |
| ITF - M15 Sozopol | 2021/10/13 15:40 | Kai Wehnelt v Andrew Paulson | 6-7,1-6 |
| ITF - M15 Sozopol | 2021/10/10 07:00 | Billy Harris v Kai Wehnelt | 6-4,6-1 |
| ITF - M15 Sozopol | 2021/10/09 07:00 | Alexander Donski v Kai Wehnelt | 6-4,3-6,6-7 |
| ITF - M15 Sozopol | 2021/10/08 07:00 | Kai Wehnelt v Ilya Snitari | 7-6,6-3 |
| ITF - M15 Sozopol | 2021/10/07 07:00 | Kai Wehnelt v George Tsivadze | 6-3,6-1 |
| ITF - M15 Sozopol | 2021/10/05 09:00 | Kai Wehnelt v Dian Nedev | 6-3,6-3 |
| Challenger - Sibiu | 2021/09/27 07:00 | Kai Wehnelt v Stefan Palosi | 6-7,7-6,2-6 |