| 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 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 Sofia | 2021/09/01 06:30 | Simeon Terziev v Adriano Dzhenev | 6-1,6-2 |
| UTR Pro Tennis Series Sofia | 2021/08/31 11:00 | Ioan Alexandru Chirita v Adriano Dzhenev | 6-3,2-6,0-5 |
| UTR Pro Tennis Series Sofia | 2021/08/30 08:30 | Veselin Kiselkov v Adriano Dzhenev | 3-6,6-1,4-5 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/17 07:00 | Vasil Kirkov v Adriano Dzhenev | 6-3,6-2 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/16 09:00 | Adriano Dzhenev v Yanais Laurent | 6-0,6-1 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/14 10:30 | Adriano Dzhenev v Dmitrii Vasilev | 6-1,7-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/13 06:00 | Adriano Dzhenev v Olexiy Kolisnyk | 1-6,2-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/12 09:00 | Anthony Genov v Adriano Dzhenev | 4-6,6-6 |