| Bulgaria Liga Pro | 2021/10/20 04:30 | Andrey Kapustin v Pavel Zelenkin | 7-5,7-6 |
| Bulgaria Liga Pro | 2021/10/08 06:00 | Pavel Zelenkin v Andrey Kapustin | 1-6,4-6 |
| Bulgaria Liga Pro | 2021/10/08 04:30 | Andrey Kapustin v Pavel Zelenkin | 7-6,6-2 |
| Bulgaria Liga Pro | 2021/10/20 04:30 | Andrey Kapustin v Pavel Zelenkin | 7-5,7-6 |
| Bulgaria Liga Pro | 2021/10/13 06:00 | Pavel Zelenkin v Andrei Smirnov | 6-4,7-6 |
| Bulgaria Liga Pro | 2021/10/13 04:30 | Andrei Smirnov v Pavel Zelenkin | 7-5,6-4 |
| Bulgaria Liga Pro | 2021/10/08 06:00 | Pavel Zelenkin v Andrey Kapustin | 1-6,4-6 |
| Bulgaria Liga Pro | 2021/10/08 04:30 | Andrey Kapustin v Pavel Zelenkin | 7-6,6-2 |
| Bulgaria Liga Pro | 2021/10/20 04:30 | Andrey Kapustin v Pavel Zelenkin | 7-5,7-6 |
| Bulgaria Liga Pro | 2021/10/18 06:00 | Nikita Kuznetsov v Andrey Kapustin | 6-3,4-6,7-10 |
| Bulgaria Liga Pro | 2021/10/18 04:30 | Andrey Kapustin v Nikita Kuznetsov | 6-4,6-2 |
| 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 |
| Bulgaria Liga Pro | 2021/10/08 06:00 | Pavel Zelenkin v Andrey Kapustin | 1-6,4-6 |