Stadium: Court 1 Oberhaching Round: 25 Ground: Hardcourt indoor
| ITF M15 Oberhaching | 2024/02/12 10:00 | Marc Majdandzic v Alen Mujakic | 4-6,4-6 |
| ITF M15 Oberhaching | 2024/02/11 13:50 | Alen Mujakic v Jonas Trinker | 6-0,6-3 |
| ITF M15 Oberhaching | 2024/02/11 08:45 | Luca Parenti v Alen Mujakic | 0-6,3-6 |
| ITF M15 Monastir | 2024/01/21 08:00 | Alexander Orlov v Alen Mujakic | 6-4,3-6,10-7 |
| German Championship | 2023/12/06 12:00 | Alen Mujakic v Max Hans Rehberg | 2-6,4-6 |
| ITF M15 Pirot | 2023/09/07 09:00 | Alen Mujakic v Antonio Massara | 4-6,1-6 |
| ITF M15 Pirot | 2023/09/06 11:00 | Andrej Nedic v Alen Mujakic | 3-6,1-6 |
| ITF M15 Pirot | 2023/09/05 09:30 | Mihail Ivanov v Alen Mujakic | 1-6,6-3,7-10 |
| ITF M25 Nussloch | 2024/01/23 18:00 | Vincent Marysko v Lasse Poertner | 6-3,6-4 |
| ITF M15 Cadolzburg | 2024/01/16 11:40 | Lasse Poertner v Stepan Baum | 6-3,4-6,1-6 |
| ITF M15 Doha | 2023/10/09 18:00 | Lasse Poertner v Koray Kirci | 6-3,4-6,2-6 |
| ITF M15 Uberlingen | 2023/08/18 10:00 | Lasse Poertner v Jakob Schnaitter | 2-6,4-6 |
| ITF M15 Uberlingen | 2023/08/17 10:50 | Lasse Poertner v Illya Beloborodko | 6-4,3-6,6-3 |
| ITF M15 Frankfurt Am Main | 2023/08/08 09:00 | Lasse Poertner v Florian Broska | 5-7,1-6 |
| ITF M15 Eindhoven | 2023/08/01 09:55 | Elmer Moller v Lasse Poertner | 6-3,6-0 |
| ITF M15 Metzingen | 2023/07/26 15:35 | Lasse Poertner v Nicola Kuhn | 6-7,2-6 |