| UTR Pro Tennis Series Pazardzhik | 2021/07/17 07:30 | Lazov, Alexander v Yanais Laurent | 6-3,2-6,4-4 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/05 11:30 | Lazov, Alexander v Yanais Laurent | 0-6,6-1,6-4 |
| UTR Pro Tennis Series Ricany | 2021/09/14 09:00 | Lazov, Alexander v Wojcik, Yann | 6-4,3-6,6-7 |
| UTR Pro Tennis Series Ricany | 2021/09/13 12:00 | Lazov, Alexander v Michael Gloeckler | 6-3,6-3 |
| UTR Pro Tennis Series Sofia | 2021/09/04 07:30 | Lazov, Alexander v George Lazarov | 3-5 |
| UTR Pro Tennis Series Sofia | 2021/09/03 07:00 | Lazov, Alexander v Dian Nedev | 7-5,5-3 |
| UTR Pro Tennis Series Sofia | 2021/09/01 09:30 | Dzhavakian, Yurii v Lazov, Alexander | 7-6,7-6 |
| UTR Pro Tennis Series Sofia | 2021/08/31 09:30 | Ianakiev, Milen v Lazov, Alexander | 6-7,2-6 |
| UTR Pro Tennis Series Sofia | 2021/08/30 11:30 | Julien De Cuyper v Lazov, Alexander | 2-6,2-5 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/17 07:30 | Lazov, Alexander v Yanais Laurent | 6-3,2-6,4-4 |
| UTR Pro Tennis Series Ricany | 2021/09/14 09:00 | Michael Gloeckler v Yanais Laurent | 1-6,2-6 |
| UTR Pro Tennis Series Ricany | 2021/09/11 07:30 | Krystof Zapsky v Yanais Laurent | 6-2,6-4 |
| UTR Pro Tennis Series Ricany | 2021/09/10 07:30 | Yanais Laurent v Lawrence Bataljin | 6-2,6-1 |
| UTR Pro Tennis Series Ricany | 2021/09/09 10:00 | Yanais Laurent v Andrey Chepelev | 0-6,4-6 |
| UTR Pro Tennis Series Ricany | 2021/09/08 10:30 | Satral, Jan v Yanais Laurent | 4-6,6-7 |
| UTR Pro Tennis Series Ricany | 2021/09/07 07:30 | Michalis Sakellaridis v Yanais Laurent | 2-6,3-5 |
| UTR Pro Tennis Series Portoroz | 2021/08/28 07:00 | Yanais Laurent v Gal Emersic Potocnik | 3-6,1-5 |
| UTR Pro Tennis Series Portoroz | 2021/08/27 13:30 | Yanais Laurent v Botezan, George | 6-4,6-1 |