| 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 | 2021/12/06 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 |
| Bulgaria Liga Pro | 2021/11/10 06:00 | Andrei Smirnov v Andrey Kapustin | 6-4,6-2 |
| Bulgaria Liga Pro | 2021/11/10 04:30 | Andrey Kapustin v Andrei Smirnov | 4-6,6-1,7-10 |
| Bulgaria Liga Pro | 2021/10/27 06:00 | Ivan Erastov v Andrei Smirnov | 2-6,6-4,10-3 |
| Bulgaria Liga Pro | 2021/10/27 04:30 | Andrei Smirnov v Ivan Erastov | 6-1,4-6,8-10 |
| Bulgaria Liga Pro | 2021/12/03 06:00 | Vladimir Gusev v Nikita Kuznetsov | 1-6,1-6 |
| Bulgaria Liga Pro | 2021/12/03 04:30 | Nikita Kuznetsov v Vladimir Gusev | 6-4,6-2 |
| Bulgaria Liga Pro | 2021/12/01 09:00 | Vladimir Gusev v Nikita Kuznetsov | 4-6,5-7 |
| Bulgaria Liga Pro | 2021/12/01 07:30 | Nikita Kuznetsov v Vladimir Gusev | 6-2,7-6 |
| Bulgaria Liga Pro | 2021/11/26 09:00 | Pavel Zelenkin v Nikita Kuznetsov | 3-6,0-6 |
| Bulgaria Liga Pro | 2021/11/26 07:30 | Nikita Kuznetsov v Pavel Zelenkin | 6-3,6-4 |
| Bulgaria Liga Pro | 2021/10/25 06:00 | Nikita Kuznetsov v Andrey Kapustin | 6-3,6-4 |
| Bulgaria Liga Pro | 2021/10/25 04:30 | Andrey Kapustin v Nikita Kuznetsov | 3-6,4-6 |