| UTR Pro Tennis Series Pazardzhik | 2021/07/17 07:30 | Alexander Lazov v Yanais Laurent | 6-3,2-6,4-4 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/16 10:30 | Arthus De La Bassetiere v Alexander Lazov | 6-4,1-6,3-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/15 06:00 | Yurii Dzhavakian v Alexander Lazov | 1-6,2-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/13 07:30 | Petr Nesterov v Alexander Lazov | 6-4,5-3 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/12 10:30 | Alexander Lazov v Valentin Vanta | 7-6,2-6,4-6 |
| UTR Pro Tennis Series Beograd | 2021/07/08 14:15 | Giacomo Revelli v Alexander Lazov | 4-6,6-1,5-2 |
| UTR Pro Tennis Series Beograd | 2021/07/07 07:30 | Dusan Milanovic v Alexander Lazov | 1-6,6-4,4-6 |
| UTR Pro Tennis Series Beograd | 2021/07/05 10:30 | Alex Kuperstein v Alexander Lazov | 6-4,7-5 |
| Spanish Summer League | 2020/07/29 15:00 | Sergi Perez Contri v Xavier Matas Ortega | 7-5,5-4 |