Round: 1
| 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 | 2021/06/24 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 |
| 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 |
| Bulgaria Liga Pro | 2021/08/08 18:30 | Mihail Minchenkov v Anton Kondrashov | 3-6,6-3,10-4 |
| Bulgaria Liga Pro | 2021/08/08 17:00 | Anton Kondrashov v Mihail Minchenkov | 4-6,4-6 |
| Bulgaria Liga Pro | 2021/06/28 06:00 | Mihail Minchenkov v Dmitriy Volkov | 5-7,6-4,10-7 |
| Bulgaria Liga Pro | 2021/06/28 04:30 | Dmitriy Volkov v Mihail Minchenkov | 6-4,6-7,6-10 |
| Bulgaria Liga Pro | 2021/06/24 06:00 | Aleksandr Gorbachyov v Mihail Minchenkov | 3-6,5-7 |
| Bulgaria Liga Pro | 2021/06/24 04:30 | Mihail Minchenkov v Aleksandr Gorbachyov | 6-2,6-2 |
| Bulgaria Liga Pro | 2021/06/22 06:00 | Dmitriy Volkov v Mihail Minchenkov | 6-3,7-5 |
| Bulgaria Liga Pro | 2021/06/22 04:30 | Mihail Minchenkov v Dmitriy Volkov | 6-2,2-6,9-11 |