Ground: Clay
| ITF M15 Monastir | 2023/11/15 08:30 | Marcel Zielinski v Simon Beaupain | 3-6,1-6 |
| 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 |
| 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 |
| ITF M15 Monastir | 2024/10/03 11:30 | Simon Beaupain v Emilien Demanet | 3-6,0-6 |
| ITF M15 Monastir | 2024/10/02 08:30 | Simon Beaupain v Mikhail Gorokhov | 6-4,6-7,6-1 |
| ITF M15 Monastir | 2024/09/25 15:30 | Emilien Demanet v Simon Beaupain | 6-0,6-2 |
| ITF M25 Oldenzaal | 2024/08/28 10:50 | Simon Beaupain v Mats Rosenkranz | 6-7,2-6 |
| ITF M15 Lambermont | 2024/08/24 15:00 | Sebastian Eriksson v Simon Beaupain | 7-6,4-6,6-3 |
| ITF M15 Lambermont | 2024/08/23 15:00 | Simon Beaupain v Noah Schlagenhauf | 6-3,7-5 |
| ITF M15 Lambermont | 2024/08/22 12:20 | Simon Beaupain v Arthur Bonnaud | 6-3,6-3 |
| ITF M15 Lambermont | 2024/08/21 15:25 | Simon Beaupain v John H Lithen | 6-2,5-7,7-6 |