Stadium: Court 1 Round: 19 Ground: Clay
| ITF M15 Grenoble | 2021/02/11 12:05 | Elmar Ejupovic v Lucas Gerch | 6-4,6-1 |
| ITF Germany F11 | 2017/08/16 11:45 | Lucas Gerch v Elmar Ejupovic | 6-4,7-5 |
| Challenger Forli | 2021/06/13 09:45 | Alessandro Bega v Lucas Gerch | 3-6,1-6 |
| ITF M15 Antalya | 2021/05/28 08:20 | Pol Martin Tiffon v Lucas Gerch | 7-5,6-3 |
| ITF M15 Antalya | 2021/05/27 10:10 | Paul Woerner v Lucas Gerch | 7-5,6-7,3-6 |
| ITF M15 Antalya | 2021/05/26 12:00 | Giorgio Tabacco v Lucas Gerch | 2-6,3-6 |
| ITF M15 Antalya | 2021/05/20 07:30 | Lucas Gerch v Mariano Navone | 3-6,6-4,2-6 |
| ITF M15 Antalya | 2021/05/19 07:25 | Lucas Gerch v Fermin Tenti | 6-3,6-4 |
| ITF M15 Troisdorf | 2021/05/14 12:25 | Michael Geerts v Lucas Gerch | 7-5,6-4 |
| ITF M15 Troisdorf | 2021/05/13 09:00 | Kai Wehnelt v Lucas Gerch | 4-6,6-4,5-7 |
| Challenger Bratislava | 2021/06/06 12:20 | Elmar Ejupovic v Jonas Forejtek | 6-7,6-7 |
| ITF M25 Kiseljak | 2021/05/26 12:30 | Matheus Pucinelli De Almeida v Elmar Ejupovic | 6-2,6-2 |
| ITF M15 Troisdorf | 2021/05/16 12:00 | Michael Geerts v Elmar Ejupovic | 6-7,2-6 |
| ITF M15 Troisdorf | 2021/05/15 13:25 | Elmar Ejupovic v Sebastian Fanselow | 7-6,6-4 |
| ITF M15 Troisdorf | 2021/05/14 11:00 | Yannick Mertens v Elmar Ejupovic | 2-6,1-6 |
| ITF M15 Troisdorf | 2021/05/13 11:05 | Juan Pablo Paz v Elmar Ejupovic | 6-7,4-6 |
| ITF M15 Troisdorf | 2021/05/12 13:00 | Oscar Moraing v Elmar Ejupovic | 3-6,3-6 |
| ITF M25 Meerbusch | 2021/04/17 12:55 | Elmar Ejupovic v Alexander Erler | 3-6,4-6 |