Stadium: BikeLeasing Court Round: 25 Ground: Clay
| ITF M25 Kassel | 2024/07/10 10:00 | Raphael Collignon v Lasse Poertner | 6-2,6-1 |
| Challenger Karlsruhe | 2024/06/30 09:00 | Edas Butvilas v Lasse Poertner | 7-6,6-1 |
| ITF M15 Kamen | 2024/06/27 08:30 | Lasse Poertner v Liam Gavrielides | 6-4,1-6,6-7 |
| ITF M15 Kamen | 2024/06/25 11:05 | Vincent Marysko v Lasse Poertner | 2-6,1-6 |
| ITF M15 Casablanca | 2024/06/19 10:00 | Lasse Poertner v Alex M Pujolras | 4-6,7-5,3-6 |
| Challenger Heilbronn | 2024/06/04 11:50 | Geoffrey Blancaneaux v Lasse Poertner | 6-1,7-6 |
| Challenger Heilbronn | 2024/06/03 12:05 | Lasse Poertner v Louis Wessels | 3-6,6-3,6-4 |
| Challenger Heilbronn | 2024/06/02 09:30 | Mathias Bourgue v Lasse Poertner | 6-3,3-6,2-6 |
| ITF M25 Sarajevo | 2024/06/05 09:50 | Sasa Markovic v Elmar Ejupovic | 7-6,6-2 |
| Challenger Acapulco | 2024/04/15 01:25 | Nathan Ponwith v Elmar Ejupovic | 7-6,6-3 |
| Challenger Morelos | 2024/04/08 18:20 | Elmar Ejupovic v Keegan Smith | 4-6,3-6 |
| Challenger Morelos | 2024/04/07 20:50 | Elmar Ejupovic v Andres Delgadillo | 6-0,7-6 |
| Challenger Mexico City | 2024/04/02 23:40 | Elmar Ejupovic v Juan Pablo Ficovich | 4-6,3-6 |
| Challenger Mexico City | 2024/04/01 17:00 | James Trotter v Elmar Ejupovic | 5-7,5-7 |
| Challenger Mexico City | 2024/03/31 18:40 | Diego Bustamante v Elmar Ejupovic | 1-6,1-6 |
| Challenger San Luis Potosi | 2024/03/25 18:10 | Beibit Zhukayev v Elmar Ejupovic | 3-6,7-6,6-3 |