| 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 | 2021/11/10 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 | 2021/10/15 06:00 | Andrei Smirnov v Andrey Kapustin | 6-3,3-6,11-9 |
| Bulgaria Liga Pro | 2021/10/15 04:30 | Andrey Kapustin v Andrei Smirnov | 2-6,6-4,10-12 |
| Bulgaria Liga Pro | 2021/10/11 06:00 | Andrey Kapustin v Andrei Smirnov | 6-3,3-6,7-10 |
| Bulgaria Liga Pro | 2021/10/11 04:30 | Andrei Smirnov v Andrey Kapustin | 1-6,5-7 |