| UTR Pro Tennis Series Zadar | 2021/11/21 12:00 | Egor Matvievici v Alexander Lazov | 5-4 |
| UTR Pro Tennis Series Zadar | 2021/11/20 12:30 | Ivan Mikhaylyuk v Alexander Lazov | 3-6,6-7 |
| UTR Pro Tennis Series Zadar | 2021/11/19 13:50 | Ivan Penev v Alexander Lazov | 6-3,3-6,3-6 |
| UTR Pro Tennis Series Zadar | 2021/11/18 12:00 | Deni Zmak v Alexander Lazov | 6-3,6-7,5-3 |
| UTR Pro Tennis Series Zadar | 2021/11/16 10:30 | Jose A R Rodriguez v Alexander Lazov | 1-6,2-6 |
| UTR Pro Tennis Series Zadar | 2021/11/14 15:20 | Graham Maassen v Alexander Lazov | 6-2,6-4 |
| UTR Pro Tennis Series Brasov | 2021/10/30 09:30 | Stefan A Andreescu v Alexander Lazov | 6-3,7-5 |
| UTR Pro Tennis Series Brasov | 2021/10/29 10:00 | Yurii Dzhavakian v Alexander Lazov | 6-2,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/11/22 09:30 | Michiel de Krom v Sergio Redondo | 6-3,5-3 |
| UTR Pro Tennis Series Barcelona | 2021/11/13 10:00 | Sergio Redondo v Danylo Veremeychuk | 2-6,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/11/11 18:30 | Diego F Flores v Sergio Redondo | 6-2,5-1 |
| UTR Pro Tennis Series Barcelona | 2021/11/09 12:30 | Xavier Gabarro v Sergio Redondo | 2-6,3-5 |