Ground: Hardcourt outdoor
| ITF M25 Kiseljak | 2023/05/30 07:30 | Corey Gaal v Marsel Znuderl | 6-3,6-1 |
| ITF M25 Kiseljak | 2023/05/29 09:30 | Marsel Znuderl v Kirill Mishkin | 6-7,7-6,11-9 |
| ITF M15 Osijek | 2023/05/01 13:45 | Marsel Znuderl v Noah Thurner | 4-6,7-6,8-10 |
| ITF M15 Osijek | 2023/04/30 13:00 | Pierre Antoine Tailleu v Marsel Znuderl | 3-6,6-3,8-10 |
| ITF M25 Split | 2023/04/18 09:50 | Marsel Znuderl v Serafin Zund | 2-6,1-6 |
| ITF M25 Split | 2023/04/17 15:30 | Tim Heger v Marsel Znuderl | 4-6,4-6 |
| ITF M25 Split | 2023/04/17 07:00 | Lamin L Da Silva v Marsel Znuderl | 2-6,6-7 |
| ITF M15 Sharm El Sheikh | 2023/03/27 08:30 | Marsel Znuderl v Max Benaim | 4-6,2-6 |