Stadium: Court 2 Round: 25 Ground: Clay
| ITF M15 Meerbusch | 2023/04/26 09:00 | Marcel Zielinski v John Sperle | 7-6,7-5 |
| ITF M15 Eindhoven | 2022/08/15 11:00 | Marcel Zielinski v John Sperle | 6-2,7-6 |
| ITF M15 Antalya | 2024/03/21 07:00 | Marcel Zielinski v Ioan Alexandru Chirita | 6-7,1-6 |
| ITF M15 Antalya | 2024/03/13 07:00 | Marcel Zielinski v Jordi Garcia Mestre | 4-6,1-6 |
| ITF M25 Hammamet | 2024/02/14 13:30 | Daniel Bagnolini v Marcel Zielinski | 6-4,6-3 |
| ITF M25 Hammamet | 2024/02/06 13:50 | Oscar Jose Gutierrez v Marcel Zielinski | 6-3,6-0 |
| ITF M15 Antalya | 2023/12/20 07:00 | Marcel Zielinski v Milos Mikovic | 3-6,7-5,3-6 |
| ITF M15 Antalya | 2023/12/13 09:10 | Emilien Voisin v Marcel Zielinski | 6-1,6-2 |
| ITF M15 Monastir | 2023/11/23 13:30 | Marcel Zielinski v Cyril Vandermeersch | 3-6,2-6 |
| ITF M15 Monastir | 2023/11/21 08:00 | Marcel Zielinski v Jakub Filip | 7-5,6-2 |
| ITF M15 Antalya | 2024/03/26 08:30 | John Sperle v Manuel Mouilleron Salvo | 6-4,7-6 |
| ITF M15 Antalya | 2024/03/25 08:20 | John Sperle v Justin Engel | 6-3,7-6 |
| ITF M15 Antalya | 2024/03/21 08:45 | Filip Cristian Jianu v John Sperle | 6-3,7-5 |
| ITF M15 Antalya | 2024/03/20 10:00 | Lucio Carnevalle v John Sperle | 0-6,3-6 |
| ITF M15 Monastir | 2024/02/29 11:05 | John Sperle v Lorenzo Carboni | 4-6,1-6 |
| ITF M15 Monastir | 2024/02/27 12:00 | John Sperle v Marc Ros Mesas | 6-1,6-0 |
| ITF M15 Monastir | 2024/02/22 10:55 | John Sperle v Matej Dodig | 5-7,1-6 |
| ITF M15 Monastir | 2024/02/21 16:00 | Samuel Puskar v John Sperle | 4-6,1-6 |