Stadium: Court 1 Round: 26 Ground: Clay
| 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 |
| ITF M15 Bratislava | 2021/08/16 08:00 | Zsombor Velcz v Matej Galik | 6-0,6-2 |
| ITF M15 Telavi | 2021/08/03 09:00 | Mikhail Fufygin v Zsombor Velcz | 6-4,7-6 |
| ITF M15 Doboj | 2021/07/13 12:30 | Zsombor Velcz v Martin Krumich | 6-3,4-6,6-7 |
| ITF M15 Antalya | 2021/06/28 06:30 | Zsombor Velcz v Fletcher Scott | 5-7,1-6 |
| ITF M15 Antalya | 2021/06/23 10:15 | Stefan Palosi v Zsombor Velcz | 6-3,7-6 |
| ITF M15 Zilina | 2021/08/31 09:30 | Jakub Novak v Peter Nad | 4-6,7-6,3-10 |
| ITF M15 Zilina | 2021/08/30 13:00 | Eirik Groener v Peter Nad | 3-6,6-7 |
| ITF M15 Bratislava | 2021/08/25 13:05 | Gorazd Srbljak v Peter Nad | 6-2,6-1 |
| ITF M15 Poprad | 2021/07/05 08:00 | Peter Nad v Caspar Schuetze | 6-3,6-4 |
| ITF M15 Poprad | 2021/07/04 11:00 | Edouard Villoslada v Peter Nad | 2-6,2-6 |
| ITF M15 Antalya | 2021/03/28 06:30 | Peter Nad v Maurus Malgiaritta | 4-6,2-6 |
| ITF M15 Bratislava | 2021/03/08 09:00 | Peter Nad v Edward Hubner | 4-6,7-6,9-11 |
| ITF M15 Bratislava | 2021/03/03 11:35 | Kyrian Jacquet v Peter Nad | 6-3,6-2 |