Stadium: Court 1 Round: 25 Ground: Clay
| ITF - Kamen M15 | 2023/06/26 15:00 | Stepan Pecak v Matyas Cerny | 5-7,3-6 |
| ITF - Kamen M15 | 2023/06/26 08:00 | Christian Hansen v Matyas Cerny | 3-6,2-6 |
| ITF - Jablonec Nad Nisou M25 | 2023/05/31 08:00 | Buvaysar Gadamauri v Matyas Cerny | 6-1,3-6,6-1 |
| ITF - Most M25 | 2023/05/23 08:00 | Aleksandr Braynin v Matyas Cerny | 6-1,3-6,5-10 |
| ITF - Praga M25 | 2023/05/15 10:30 | Matyas Cerny v Dylan Dietrich | 5-7,2-6 |
| ITF - Meerbusch M15 | 2023/04/25 08:00 | Matyas Cerny v Dominik Recek | 6-3,3-6,11-9 |
| ITF - Meerbusch M15 | 2023/04/24 12:00 | Luca Wiedenmann v Matyas Cerny | 4-6,4-6 |
| ITF - Meerbusch M15 | 2023/04/23 08:00 | Ole Bredschneijder v Matyas Cerny | 1-6,4-6 |
| ITF - Saarlouis M15 | 2023/06/23 16:30 | Marcel Zielinski v Jeffrey Von Der Schulenburg | 6-7,6-2,1-6 |
| ITF - Saarlouis M15 | 2023/06/22 09:30 | Marcel Zielinski v Tim Heger | 6-0,6-3 |
| ITF - Saarlouis M15 | 2023/06/21 09:25 | Mika Brunold v Marcel Zielinski | 3-6,1-6 |
| ITF - Meerbusch M15 | 2023/04/27 08:55 | Marcel Zielinski v Liam Gavrielides | 6-7,1-6 |
| ITF - Meerbusch M15 | 2023/04/26 09:00 | Marcel Zielinski v John Sperle | 7-6,7-5 |
| ITF - Telde M15 | 2023/04/23 09:00 | Marcel Zielinski v Alejandro Manzanera Pertusa | 4-6,6-7 |
| ITF - Telde M15 | 2023/04/22 09:00 | Kai Lemstra v Marcel Zielinski | 2-6,4-6 |
| ITF - Telde M15 | 2023/04/21 09:00 | Marcel Zielinski v Martin Cuevas | 6-4,6-1 |