Round: 1
| Bulgaria Liga Pro | 2021/06/20 18:30 | Artem Simashev v Artem Belousov | 6-4,2-6,11-9 |
| Bulgaria Liga Pro | 2021/06/20 17:00 | Artem Belousov v Artem Simashev | 7-5,6-3 |
| Bulgaria Liga Pro | 2021/06/28 18:30 | Mikhail Gusev v Aleksandr Repin | 0-6,4-6 |
| Bulgaria Liga Pro | 2021/06/28 17:00 | Aleksandr Repin v Mikhail Gusev | 6-4,6-1 |
| 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 | 2021/06/22 18:30 | Mikhail Gusev v Aleksandr Repin | 2-6,3-6 |
| Bulgaria Liga Pro | 2021/06/22 17:00 | Aleksandr Repin v Mikhail Gusev | 6-4,6-0 |