| Bulgaria Liga Pro | 2021/12/08 06:00 | Nikita Kuznetsov v Andrei Smirnov | 6-4,6-3 |
| Bulgaria Liga Pro | 2021/12/08 04:30 | Andrei Smirnov v Nikita Kuznetsov | 4-6,2-6 |
| Bulgaria Liga Pro | 2021/09/28 06:00 | Nikita Kuznetsov v Andrei Smirnov | 4-6,2-6 |
| Bulgaria Liga Pro | 2021/09/28 04:30 | Andrei Smirnov v Nikita Kuznetsov | 6-2,6-2 |
| Bulgaria Liga Pro | 2021/12/19 06:30 | Nikita Kuznetsov v Alexei Miller | 2-6,2-6 |
| Bulgaria Liga Pro | 2021/12/19 05:00 | Alexei Miller v Nikita Kuznetsov | 6-4,6-3 |
| Bulgaria Liga Pro | 2021/12/12 06:30 | Andrey Kapustin v Nikita Kuznetsov | 6-4,6-7,10-5 |
| Bulgaria Liga Pro | 2021/12/12 05:00 | Nikita Kuznetsov v Andrey Kapustin | 4-6,6-2,8-10 |
| Bulgaria Liga Pro | 2021/12/10 06:00 | Andrey Kapustin v Nikita Kuznetsov | 6-3,6-4 |
| Bulgaria Liga Pro | 2021/12/10 04:30 | Nikita Kuznetsov v Andrey Kapustin | 6-3,4-6,10-8 |
| Bulgaria Liga Pro | 2021/12/08 06:00 | Nikita Kuznetsov v Andrei Smirnov | 6-4,6-3 |
| Bulgaria Liga Pro | 2021/12/08 04:30 | Andrei Smirnov v Nikita Kuznetsov | 4-6,2-6 |
| Bulgaria Liga Pro | 2021/12/21 06:00 | Andrei Smirnov v Alexei Miller | 6-4,2-6,3-10 |
| Bulgaria Liga Pro | 2021/12/21 04:30 | Alexei Miller v Andrei Smirnov | 4-6,7-6,11-9 |
| Bulgaria Liga Pro | 2021/12/08 06:00 | Nikita Kuznetsov v Andrei Smirnov | 6-4,6-3 |
| Bulgaria Liga Pro | 2021/12/08 04:30 | Andrei Smirnov v Nikita Kuznetsov | 4-6,2-6 |
| Bulgaria Liga Pro | 2021/12/06 06:00 | Andrey Kapustin v Andrei Smirnov | 2-6,4-6 |
| Bulgaria Liga Pro | 2021/12/06 04:30 | Andrei Smirnov v Andrey Kapustin | 6-3,4-6,6-10 |
| Bulgaria Liga Pro | 2021/11/15 06:00 | Andrei Smirnov v Ivan Erastov | 6-1,6-3 |
| Bulgaria Liga Pro | 2021/11/15 04:30 | Ivan Erastov v Andrei Smirnov | 2-6,3-6 |