Stadium: TennisClub GRÜN-WEISS Ahaus E.V. - Court 4 Ground: Clay
Referee:
| ITF M15 Alaminos | 2025/03/13 07:30 | Pablo Masjuan Ginel v Marcel Zielinski | 7-6,6-4 |
| ITF M15 Alaminos | 2025/03/12 11:00 | Marcel Zielinski v Adrian Oetzbach | 6-3,4-6,7-5 |
| ITF M15 Valencia | 2025/02/12 15:17 | Max Alcala Gurri v Marcel Zielinski | 6-3,5-3 |
| ITF M15 Valencia | 2024/11/11 09:00 | Marcel Zielinski v Anas Mazdrashki | 2-6,5-7 |
| ITF M15 Valencia | 2024/11/10 13:00 | Marcel Zielinski v Pere Prat Turro | 7-6,6-3 |
| ITF M15 Melilla | 2024/09/20 07:30 | Benjamin Winter Lopez v Marcel Zielinski | 7-6,6-1 |
| ITF M15 Melilla | 2024/09/18 12:15 | Gabriel Elicha Navas v Marcel Zielinski | 2-6,3-6 |
| Challenger Dobrich | 2024/09/08 13:15 | Marcel Zielinski v Dominik Kellovsky | 3-6,1-6 |
| UTR Pro Olomouc | 2025/03/23 07:30 | Bartosz Wojnar v Vitek Horak | 6-3,3-6,3-6 |
| UTR Pro Olomouc | 2025/03/22 10:20 | Tomas Talajka v Vitek Horak | 3-6,3-6 |
| UTR Pro Olomouc | 2025/03/20 09:25 | Vitek Horak v Patrik Homola | 3-6,2-6 |
| UTR Pro Olomouc | 2025/03/19 07:30 | Vitek Horak v Sebastian Chodura | 7-5,2-6,6-3 |
| UTR Pro Olomouc | 2025/03/18 07:30 | Vitek Horak v Adam Jurajda | 6-3,4-6,2-6 |
| UTR Pro Olomouc | 2025/03/17 09:35 | Vitek Horak v David Kovarik | 6-0,6-2 |
| ITF M25 Pardubice | 2024/09/16 12:00 | Jonas Gundacker v Vitek Horak | 6-2,6-1 |
| ITF M15 Ollersbach | 2024/08/12 14:30 | Vitek Horak v Alexander Wagner | 2-6,2-6 |