Stadium: Court 1 Round: 29 Ground: Clay
| ITF M15 Bad Waltersdorf | 2023/10/07 11:10 | Marcel Zielinski v Sebastian Sorger | 6-1,6-3 |
| ITF M15 Bad Waltersdorf | 2023/10/06 10:10 | Marcel Zielinski v David Pichler | 6-4,5-7,6-1 |
| ITF M15 Bad Waltersdorf | 2023/10/05 11:45 | Matthias Ujvary v Marcel Zielinski | 4-6,7-6,2-6 |
| ITF M15 Bad Waltersdorf | 2023/10/04 12:20 | Patrick Zahraj v Marcel Zielinski | 7-6,3-6,0-6 |
| ITF M15 Buschhausen | 2023/09/14 14:30 | Jonas Forejtek v Marcel Zielinski | 6-3,6-2 |
| ITF M15 Buschhausen | 2023/09/13 10:45 | Marcel Zielinski v Christian Hansen | 7-5,6-1 |
| ITF M15 Koszalin | 2023/09/09 11:00 | Marcel Zielinski v Dominik Kellovsky | 3-6,3-6 |
| ITF M15 Koszalin | 2023/09/08 10:00 | Marcel Zielinski v Patrick Zahraj | 6-3,7-5 |
| ITF M15 Bad Waltersdorf | 2023/10/07 08:00 | Vlad Andrei Dancu v Branko Djuric | 2-6,7-6,6-7 |
| ITF M15 Bad Waltersdorf | 2023/10/06 10:20 | David Fix v Branko Djuric | 1-6,2-6 |
| ITF M15 Bad Waltersdorf | 2023/10/05 10:55 | Branko Djuric v Jan Kupcic | 6-2,4-6,6-4 |
| ITF M15 Bad Waltersdorf | 2023/10/03 08:00 | Branko Djuric v Davide Galoppini | 6-3,6-4 |
| 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 |