Stadium: Court 1 Round: 25 Ground: Clay
| ITF M15 Telde | 2023/04/22 09:00 | Kai Lemstra v Marcel Zielinski | 2-6,4-6 |
| ITF M15 Osijek | 2024/05/02 09:30 | Viacheslav Bielinskyi v Kai Lemstra | 6-1,6-0 |
| ITF M15 Alaminos-Larnaca | 2024/03/21 10:35 | Iannis Miletich v Kai Lemstra | 7-6,6-4 |
| ITF M15 Alaminos-Larnaca | 2024/03/19 11:45 | Kai Lemstra v Adrian Oetzbach | 6-1,3-6,7-6 |
| UTR Pro Dubai | 2024/03/17 05:00 | Kai Lemstra v Lukas Velik | 6-3,6-3 |
| UTR Pro Dubai | 2024/03/16 05:00 | Kai Lemstra v Viktor Markov | 6-3,6-1 |
| UTR Pro Dubai | 2024/03/15 05:00 | Kai Lemstra v Ed Pudney | 6-1,6-2 |
| UTR Pro Dubai | 2024/03/14 07:00 | Kai Lemstra v Karol Filar | 2-6,1-6 |
| UTR Pro Dubai | 2024/03/13 05:00 | Jannik Maute v Kai Lemstra | 6-3,6-2 |
| ITF M15 Antalya | 2024/04/24 06:55 | Marcel Zielinski v Stijn Slump | 1-6,0-6 |
| ITF M15 Telde | 2024/04/11 12:35 | Kane Bonsach Ganley v Marcel Zielinski | 7-6,7-6 |
| ITF M15 Telde | 2024/04/10 14:35 | Benjamin Pietri v Marcel Zielinski | 4-6,1-6 |
| ITF M15 Antalya | 2024/03/28 07:00 | Marcel Zielinski v Jiri Barnat | 2-6,0-6 |
| ITF M15 Antalya | 2024/03/27 08:50 | Marcel Zielinski v John Sperle | 7-5,6-4 |
| 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 |