Stadium: ETUF Essen - Court 2 Ground: Clay
Referee:
| ITF M15 Antalya | 2025/04/23 09:00 | Marcel Zielinski v Mert Naci Turker | 4-6,2-6 |
| ITF M15 Antalya | 2025/04/17 08:30 | Marcel Zielinski v Ryan Nijboer | 4-6,4-6 |
| ITF M15 Antalya | 2025/04/16 08:30 | Maxwell Exsted v Marcel Zielinski | 5-7,4-6 |
| 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 |
| UTR Pro Zadar | 2025/02/24 20:05 | Sil Hollemans v Mate Valkusz | 3-6,3-6 |
| UTR Pro Dubai | 2024/03/08 14:00 | Viktor Markov v Sil Hollemans | 4-6,6-3,5-2 |
| UTR Pro Dubai | 2024/03/08 09:00 | Sil Hollemans v Dmitri Vlasov | 0-6,2-6 |
| UTR Pro Dubai | 2024/03/07 05:00 | Sil Hollemans v Janos Fekete | 6-4,5-7,0-6 |
| UTR Pro Dubai | 2024/03/06 08:33 | Andre Biro v Sil Hollemans | 6-1,6-2 |
| UTR Pro Dubai | 2024/03/05 07:36 | Jannik Maute v Sil Hollemans | 6-2,6-3 |
| UTR Pro Easton | 2023/11/19 09:00 | Ed Pudney v Sil Hollemans | 6-4,2-6,4-5 |
| UTR Pro Easton | 2023/11/18 08:00 | Richard Bloomfield v Sil Hollemans | 6-7,5-7 |