Round: 1
| Bulgaria Liga Pro | 2021/06/29 17:00 | Sergey Berezhnov v Anton Kondrashov | 3-6,2-6 |
| Bulgaria Liga Pro | 2021/06/29 17:00 | Sergey Berezhnov v Anton Kondrashov | 3-6,2-6 |
| 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 Repin, Alexander | 6-3,5-7,10-5 |
| Bulgaria Liga Pro | 2021/06/26 04:30 | Repin, Alexander 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 |