Round: 1
| Bulgaria Liga Pro | 2021/10/24 14:00 | Sergey Berezhnov v Dmitriy Volkov | 6-3,6-1 |
| Bulgaria Liga Pro | 2021/10/10 12:30 | Dmitriy Volkov v Sergey Berezhnov | 6-0,6-2 |
| Bulgaria Liga Pro | 2021/10/10 11:00 | Sergey Berezhnov v Dmitriy Volkov | 6-4,6-1 |
| Bulgaria Liga Pro | 2021/09/18 05:30 | Sergey Berezhnov v Dmitriy Volkov | 6-7,6-2,10-7 |
| Bulgaria Liga Pro | 2021/09/18 04:00 | Dmitriy Volkov v Sergey Berezhnov | 2-6,6-7 |
| Bulgaria Liga Pro | 2021/08/31 06:00 | Sergey Berezhnov v Dmitriy Volkov | 6-3,6-3 |
| Bulgaria Liga Pro | 2021/08/31 04:30 | Dmitriy Volkov v Sergey Berezhnov | 7-6,1-6,10-6 |
| Bulgaria Liga Pro | 2021/08/29 06:00 | Dmitriy Volkov v Sergey Berezhnov | 6-3,4-6,9-11 |
| Bulgaria Liga Pro | 2021/08/29 04:30 | Sergey Berezhnov v Dmitriy Volkov | 0-6,6-7 |
| Bulgaria Liga Pro | 2021/07/21 06:00 | Dmitriy Volkov v Sergey Berezhnov | 7-6,3-6,10-7 |
| Bulgaria Liga Pro | 2021/07/21 04:30 | Sergey Berezhnov v Dmitriy Volkov | 7-6,4-6,2-10 |
| Bulgaria Liga Pro | 2021/07/19 06:00 | Dmitriy Volkov v Sergey Berezhnov | 6-4,2-6,6-10 |
| Bulgaria Liga Pro | 2021/07/19 04:30 | Sergey Berezhnov v Dmitriy Volkov | 6-2,1-6,9-11 |
| Bulgaria Liga Pro | 2021/07/01 18:30 | Dmitriy Volkov v Sergey Berezhnov | 3-6,3-6 |
| Bulgaria Liga Pro | 2021/07/01 17:00 | Sergey Berezhnov v Dmitriy Volkov | 6-3,6-3 |