Round: 1
| Bulgaria Liga Pro | 2021/06/29 18:30 | Anton Kondrashov v Sergey Berezhnov | 6-4,6-0 |
| Bulgaria Liga Pro | 2021/06/29 17:00 | Sergey Berezhnov v Anton Kondrashov | 3-6,2-6 |
| Bulgaria Liga Pro | 2021/07/03 18:30 | Dmitriy Volkov v Anton Kondrashov | 4-6,4-6 |
| Bulgaria Liga Pro | 2021/07/03 17:00 | Anton Kondrashov v Dmitriy Volkov | 2-6,1-6 |
| Bulgaria Liga Pro | 2021/06/29 18:30 | Anton Kondrashov v Sergey Berezhnov | 6-4,6-0 |
| Bulgaria Liga Pro | 2021/06/29 17:00 | Sergey Berezhnov v Anton Kondrashov | 3-6,2-6 |
| 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 |
| Bulgaria Liga Pro | 2021/06/29 18:30 | Anton Kondrashov v Sergey Berezhnov | 6-4,6-0 |
| Bulgaria Liga Pro | 2021/06/29 17:00 | Sergey Berezhnov v Anton Kondrashov | 3-6,2-6 |
| Bulgaria Liga Pro | 2021/06/26 06:00 | Sergey Berezhnov v Aleksandr Repin | 6-3,5-7,10-5 |
| Bulgaria Liga Pro | 2021/06/26 04:30 | Aleksandr Repin v Sergey Berezhnov | 7-5,6-1 |
| Bulgaria Liga Pro | 2021/06/24 18:30 | Mikhail Gusev v Sergey Berezhnov | 0-6,7-5,8-10 |
| Bulgaria Liga Pro | 2021/06/24 17:00 | Sergey Berezhnov v Mikhail Gusev | 6-7,5-7 |