| Bulgaria Liga Pro | 2021/08/12 06:00 | Andrei Smirnov v Ivan Korol | 2-6,2-6 |
| Bulgaria Liga Pro | 2021/08/12 04:30 | Ivan Korol v Andrei Smirnov | 6-1,6-4 |
| Bulgaria Liga Pro | 2021/08/10 06:00 | Mikhail Suvorov v Andrei Smirnov | 4-6,6-3,5-10 |
| Bulgaria Liga Pro | 2021/08/10 04:30 | Andrei Smirnov v Mikhail Suvorov | 6-1,6-3 |
| Bulgaria Liga Pro | 2021/08/07 05:30 | Ivan Korol v Andrei Smirnov | 6-3,6-2 |
| Bulgaria Liga Pro | 2021/08/07 04:00 | Andrei Smirnov v Ivan Korol | 0-6,1-6 |
| Bulgaria Liga Pro | 2021/08/05 06:00 | Mikhail Suvorov v Andrei Smirnov | 1-6,6-7 |
| Bulgaria Liga Pro | 2021/08/05 04:30 | Andrei Smirnov v Mikhail Suvorov | 6-0,6-3 |
| Bulgaria Liga Pro | 2021/09/26 06:00 | Nikita Kuznetsov v Vladimir Kulikov | 4-6,7-6,5-10 |
| Bulgaria Liga Pro | 2021/09/26 04:30 | Vladimir Kulikov v Nikita Kuznetsov | 2-6,6-4,10-6 |
| Bulgaria Liga Pro | 2021/09/17 06:00 | Nikita Kuznetsov v Vladimir Kulikov | 6-4,2-6,2-10 |
| Bulgaria Liga Pro | 2021/09/17 04:30 | Vladimir Kulikov v Nikita Kuznetsov | 6-2,6-3 |
| Bulgaria Liga Pro | 2021/09/13 06:00 | Andrey Kapustin v Nikita Kuznetsov | 6-4,3-6,11-13 |
| Bulgaria Liga Pro | 2021/09/13 04:30 | Nikita Kuznetsov v Andrey Kapustin | 5-7,1-6 |
| Bulgaria Liga Pro | 2021/09/07 06:00 | Vladimir Kulikov v Nikita Kuznetsov | 4-6,6-3,8-10 |
| Bulgaria Liga Pro | 2021/09/07 04:30 | Nikita Kuznetsov v Vladimir Kulikov | 2-6,2-6 |