Stadium: Court 1 Round: 29 Ground: Clay
| ITF M15 Szczawno | 2023/08/30 08:35 | Adam Majchrzak v Marcel Zielinski | 2-6,3-6 |
| ITF M15 Huy | 2023/08/25 08:00 | Marcel Zielinski v Felix Corwin | 6-1,1-6,3-6 |
| ITF M15 Huy | 2023/08/23 14:10 | Marcel Zielinski v Lautaro Agustin Falabella | 6-3,6-4 |
| ITF M15 Frankfurt Am Main | 2023/08/09 13:00 | Jakob Schnaitter v Marcel Zielinski | 6-7,6-2,6-2 |
| ITF M15 Eindhoven | 2023/08/03 11:20 | Elmer Moller v Marcel Zielinski | 6-3,6-1 |
| ITF M15 Eindhoven | 2023/08/01 15:20 | Alexis Boureau v Marcel Zielinski | 1-6,1-6 |
| ITF M25 Esch/Alzette | 2023/07/13 14:30 | Marcel Zielinski v Brian Bozemoj | 6-2,6-4 |
| ITF M25 Esch/Alzette | 2023/07/12 11:35 | Marcel Zielinski v Boris Fassbender | 6-3,6-1 |
| Challenger Mauthausen | 2023/05/08 09:35 | Matthias Ujvary v Branko Djuric | 6-4,6-2 |
| Challenger Mauthausen | 2023/05/07 09:50 | Branko Djuric v Max Hans Rehberg | 6-4,6-3 |
| ITF M15 Antalya | 2022/11/18 09:40 | Branko Djuric v Timo Stodder | 6-7,2-6 |
| ITF M15 Antalya | 2022/11/17 06:25 | Ilya Snitari v Branko Djuric | 6-2,3-6,1-6 |
| ITF M15 Antalya | 2022/11/16 10:40 | Branko Djuric v Dan Alexandru Tomescu | 7-6,6-3 |
| ITF M25 Antalya | 2022/11/06 05:30 | Branko Djuric v Ivan La Cava | 6-2,2-6,14-16 |
| ITF M15 Budva | 2022/06/08 16:10 | Branko Djuric v Damien Wenger | 4-6,1-6 |
| ITF M15 Budva | 2022/05/31 11:50 | Stefan Milicevic v Branko Djuric | 4-6,1-6 |