| UTR Pro Tennis Series Ricany | 2021/09/15 12:00 | Alexander Lazov v Yanais Laurent | 4-6,6-1,3-5 |
| UTR Pro Tennis Series Ricany | 2021/09/14 09:00 | Alexander Lazov v Yann Wojcik | 6-4,3-6,6-7 |
| UTR Pro Tennis Series Ricany | 2021/09/13 12:00 | Alexander Lazov v Michael Gloeckler | 6-3,6-3 |
| UTR Pro Tennis Series Sofia | 2021/09/04 07:30 | Alexander Lazov v George Lazarov | 3-5 |
| UTR Pro Tennis Series Sofia | 2021/09/03 07:00 | Alexander Lazov v Dian Nedev | 7-5,5-3 |
| UTR Pro Tennis Series Sofia | 2021/09/01 09:30 | Yurii Dzhavakian v Alexander Lazov | 7-6,7-6 |
| UTR Pro Tennis Series Sofia | 2021/08/31 09:30 | Milen Ianakiev v Alexander Lazov | 6-7,2-6 |
| UTR Pro Tennis Series Sofia | 2021/08/30 11:30 | Julien De Cuyper v Alexander Lazov | 2-6,2-5 |
| UTR Pro Tennis Series Ricany | 2021/09/15 10:30 | Michael Gloeckler v Jan Satral | 2-6,6-6 |
| UTR Pro Tennis Series Ricany | 2021/09/13 12:00 | Yann Wojcik v Jan Satral | 2-6,1-5 |
| UTR Pro Tennis Series Ricany | 2021/09/12 09:00 | Jan Satral v Martins Podzus | 1-6,6-5 |
| UTR Pro Tennis Series Ricany | 2021/09/11 10:30 | Jan Satral v Dominik Suc | 6-3,6-4 |
| UTR Pro Tennis Series Ricany | 2021/09/09 10:00 | Jan Satral v Lawrence Bataljin | 6-3,6-1 |
| UTR Pro Tennis Series Ricany | 2021/09/08 10:30 | Jan Satral v Yanais Laurent | 4-6,6-7 |
| UTR Pro Tennis Series Ricany | 2021/09/07 07:30 | Jan Satral v Andrey Chepelev | 6-2,6-4 |
| UTR Pro Tennis Series Ricany | 2021/09/06 12:00 | Jan Satral v Michalis Sakellaridis | 6-2,6-2 |