| Bulgaria Liga Pro | 2021/07/06 06:00 | Vladislav Pryakhin v Alexey Nikiforov | 2-6,2-6 |
| Bulgaria Liga Pro | 2021/07/06 04:30 | Alexey Nikiforov v Vladislav Pryakhin | 6-4,6-3 |
| Bulgaria Liga Pro | 2021/07/02 06:00 | Alexey Nikiforov v Vladislav Pryakhin | 6-0,6-3 |
| Bulgaria Liga Pro | 2021/07/02 04:30 | Vladislav Pryakhin v Alexey Nikiforov | 2-6,4-6 |
| Bulgaria Liga Pro | 2021/08/02 06:00 | Andrey Kapustin v Alexey Nikiforov | 4-6,4-6 |
| Bulgaria Liga Pro | 2021/08/02 04:30 | Alexey Nikiforov v Andrey Kapustin | 7-5,4-6,10-5 |
| Bulgaria Liga Pro | 2021/07/22 06:00 | Alexey Nikiforov v Andrei Smirnov | 6-1,3-6,8-10 |
| Bulgaria Liga Pro | 2021/07/22 04:30 | Andrei Smirnov v Alexey Nikiforov | 0-6,6-3,4-10 |
| Bulgaria Liga Pro | 2021/07/20 06:00 | Mikhail Suvorov v Alexey Nikiforov | 1-6,4-6 |
| Bulgaria Liga Pro | 2021/07/20 04:30 | Alexey Nikiforov v Mikhail Suvorov | 6-7,4-6 |
| Bulgaria Liga Pro | 2021/07/16 06:00 | Andrei Smirnov v Alexey Nikiforov | 6-2,4-6,10-7 |
| Bulgaria Liga Pro | 2021/07/16 04:30 | Alexey Nikiforov v Andrei Smirnov | 6-3,6-0 |
| Bulgaria Liga Pro | 2021/07/31 06:00 | Andrey Kapustin v Vladislav Pryakhin | 2-6,2-6 |
| Bulgaria Liga Pro | 2021/07/31 04:30 | Vladislav Pryakhin v Andrey Kapustin | 6-3,1-6,12-10 |
| Bulgaria Liga Pro | 2021/07/26 06:00 | Vladimir Kulikov v Vladislav Pryakhin | 1-6,4-6 |
| Bulgaria Liga Pro | 2021/07/26 04:30 | Vladislav Pryakhin v Vladimir Kulikov | 4-6,1-6 |
| Bulgaria Liga Pro | 2021/07/24 06:00 | Andrei Smirnov v Vladislav Pryakhin | 6-4,4-6,5-10 |
| Bulgaria Liga Pro | 2021/07/24 04:30 | Vladislav Pryakhin v Andrei Smirnov | 6-7,4-6 |
| Bulgaria Liga Pro | 2021/07/06 06:00 | Vladislav Pryakhin v Alexey Nikiforov | 2-6,2-6 |
| Bulgaria Liga Pro | 2021/07/06 04:30 | Alexey Nikiforov v Vladislav Pryakhin | 6-4,6-3 |