Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M15 - Zlatibor | 2021/09/17 10:55 | Yan Bondarevskiy v Zsombor Velcz | 6-4,6-1 |
| ITF M15 - Zlatibor | 2021/09/16 11:30 | Zsombor Velcz v Sebastian Gima | 6-3,6-4 |
| ITF M15 - Zlatibor | 2021/09/15 09:30 | Zsombor Velcz v Savva Polukhin | 6-4,6-4 |
| ITF M15 - Zilina | 2021/09/03 09:45 | Zsombor Velcz v Adria Soriano Barrera | 3-6,4-6 |
| ITF M15 - Zilina | 2021/09/02 07:55 | Zsombor Velcz v Peter Nad | 7-6,6-2 |
| ITF M15 - Zilina | 2021/09/01 14:45 | Mathieu Perchicot v Zsombor Velcz | 4-6,3-6 |
| ITF M15 - Bratislava | 2021/08/18 08:00 | Bastian Malla v Zsombor Velcz | 6-2,6-2 |
| ITF M15 - Bratislava | 2021/08/17 08:00 | Zsombor Velcz v Lukas H Lilleengen | 7-5,6-2 |