Stadium: Court 5 Round: 25 Ground: Clay
| ITF M15 Uberlingen | 2024/08/13 08:00 | Tim Heger v Andre Steinbach | 5-7,6-4,10-12 |
| ITF M15 Uberlingen | 2024/08/12 12:00 | Andre Steinbach v Felix Einig | 7-5,6-1 |
| ITF M15 Uslar | 2024/07/15 10:30 | Andre Steinbach v Michel Hopp | 4-6,2-6 |
| ITF M15 Kamen | 2024/06/24 08:30 | Taym Alazmeh v Andre Steinbach | 6-4,6-7,10-5 |
| ITF M15 Uberlingen | 2023/08/14 08:00 | Milan Welte v Andre Steinbach | 6-2,6-1 |
| German Championship | 2021/12/05 10:30 | Tom Schonenberg v Andre Steinbach | 7-5,6-4 |
| ITF M25 Ueberlingen | 2021/08/17 08:50 | Benito Sanchez Martinez v Andre Steinbach | 6-2,6-2 |
| ITF M25 Ueberlingen | 2021/08/16 14:10 | Andre Steinbach v Laurin Aerne | 4-6,6-3,10-0 |
| ITF M25 Wetzlar | 2024/07/30 13:45 | Lasse Poertner v Maxime Chazal | 3-6,2-6 |
| ITF M15 Metzingen | 2024/07/23 14:00 | Lasse Poertner v David Fix | 6-7,4-6 |
| ITF M15 Uslar | 2024/07/17 15:30 | Lasse Poertner v Elmar Ejupovic | 4-6,6-4,1-6 |
| 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 |