| UTR Pro Tennis Series - Pazardžik | 2021/04/05 11:30 | Alexander Lazov v Yanais Laurent | 0-6,6-1,6-4 |
| UTR Pro Tennis Series - Pazardžik | 2021/07/16 10:30 | Arthus De La Bassetiere v Alexander Lazov | 6-4,1-6,3-6 |
| UTR Pro Tennis Series - Pazardžik | 2021/07/15 06:00 | Yurii Dzhavakian v Alexander Lazov | 1-6,2-6 |
| UTR Pro Tennis Series - Pazardžik | 2021/07/13 07:30 | Petr Nesterov v Alexander Lazov | 6-4,5-3 |
| UTR Pro Tennis Series - Pazardžik | 2021/07/12 10:30 | Alexander Lazov v Valentin Vanta | 7-6,2-6,4-6 |
| UTR Pro Tennis Series - Bělehrad | 2021/07/08 14:15 | Giacomo Revelli v Alexander Lazov | 4-6,6-1,5-2 |
| UTR Pro Tennis Series - Bělehrad | 2021/07/07 07:30 | Dusan Milanovic v Alexander Lazov | 1-6,6-4,4-6 |
| UTR Pro Tennis Series - Bělehrad | 2021/07/05 10:30 | Alex Kuperstein v Alexander Lazov | 6-4,7-5 |
| UTR Pro Tennis Series - Pazardžik | 2021/04/11 10:00 | Alexander Lazov v Constant De La Bassetiere | 5-7,1-6 |
| UTR Pro Tennis Series - Pazardžik | 2021/07/16 09:00 | Adriano Dzhenev v Yanais Laurent | 6-0,6-1 |
| UTR Pro Tennis Series - Pazardžik | 2021/07/15 07:30 | Olexiy Kolisnyk v Yanais Laurent | 6-4,3-6,6-4 |
| UTR Pro Tennis Series - Pazardžik | 2021/07/13 06:00 | Anthony Genov v Yanais Laurent | 0-6,3-6 |
| UTR Pro Tennis Series - Pazardžik | 2021/07/12 09:00 | Yanais Laurent v Dmitrii Vasilev | 2-6,6-2,6-3 |
| UTR Pro Tennis Series - Bělehrad | 2021/07/11 07:00 | Yanais Laurent v Nikola Slavic | 3-6,4-5 |
| UTR Pro Tennis Series - Bělehrad | 2021/07/09 12:00 | Yanais Laurent v Luka Pavlovic | 3-6,2-5 |
| UTR Pro Tennis Series - Bělehrad | 2021/07/08 07:30 | Yanais Laurent v Bogdan Borza | 6-1,3-6,2-6 |
| UTR Pro Tennis Series - Bělehrad | 2021/07/07 09:00 | Petar Teodorovic v Yanais Laurent | 2-6,1-6 |