Stadium: Court 1 Round: 27 Ground: Clay
| ITF M25 Kassel | 2019/07/20 12:10 | Lucas Gerch v Louis Wessels | 7-5,6-4 |
| ITF M25 Frankfurt am Main | 2021/08/12 11:15 | Matthew Romios v Lucas Gerch | 6-7,1-6 |
| ITF M25 Frankfurt am Main | 2021/08/11 15:30 | Kai Wehnelt v Lucas Gerch | 6-3,2-6,4-6 |
| ITF M25 Wetzlar | 2021/08/04 09:55 | Daniel Cukierman v Lucas Gerch | 6-3,2-6,6-4 |
| Challenger Poznan | 2021/07/26 11:35 | David Poljak v Lucas Gerch | 7-5,1-6,6-4 |
| Challenger Poznan | 2021/07/25 10:30 | Sebastian Fanselow v Lucas Gerch | 2-6,5-7 |
| ITF M25 The Hague | 2021/07/01 09:55 | Manuel Guinard v Lucas Gerch | 6-3,6-2 |
| ITF M25 The Hague | 2021/06/29 11:20 | Lucas Gerch v Vladimir Ivanov | 6-1,6-2 |
| Challenger Forli | 2021/06/16 09:30 | Francesco Forti v Lucas Gerch | 6-4,6-4 |
| ITF M25 Frankfurt am Main | 2021/08/12 08:55 | Sandro Kopp v Louis Wessels | 1-6,1-6 |
| ITF M25 Frankfurt am Main | 2021/08/11 10:45 | Yan Sabanin v Louis Wessels | 1-6,0-6 |
| ITF M25 Wetzlar | 2021/08/06 13:45 | Louis Wessels v Harold Mayot | 5-7,4-6 |
| ITF M25 Wetzlar | 2021/08/05 09:00 | Louis Wessels v Matthew Romios | 6-3,6-1 |
| ITF M25 Wetzlar | 2021/08/04 09:30 | Louis Wessels v Giles Hussey | 6-3,7-6 |
| ITF M15 Esch/Alzette | 2021/07/21 10:55 | Alexander Kotzen v Louis Wessels | 2-6,6-3,6-4 |
| ITF M15 Esch/Alzette | 2021/07/20 11:00 | Yan Sabanin v Louis Wessels | 6-7,0-6 |
| ITF M25 Marburg | 2021/07/11 10:30 | Nick Hardt v Louis Wessels | 6-4,5-7,6-7 |