Round: 1
| Bulgaria Liga Pro | 2021/07/13 18:30 | Vitaliy Zaychikov v Zoriy Oganov | 3-6,4-6 |
| Bulgaria Liga Pro | 2021/07/13 17:00 | Zoriy Oganov v Vitaliy Zaychikov | 6-4,2-6,4-10 |
| Bulgaria Liga Pro | 2021/07/11 18:30 | Vasily Trifonov v Vitaliy Zaychikov | 1-6,6-4,6-10 |
| Bulgaria Liga Pro | 2021/07/11 17:00 | Vitaliy Zaychikov v Vasily Trifonov | 6-3,6-3 |
| Bulgaria Liga Pro | 2021/07/07 18:30 | Vitaliy Zaychikov v Zoriy Oganov | 6-3,7-6 |
| Bulgaria Liga Pro | 2021/07/07 17:00 | Zoriy Oganov v Vitaliy Zaychikov | 7-5,7-6 |
| Bulgaria Liga Pro | 2021/06/23 18:30 | Vitaliy Zaychikov v Vsevolod Fokin | 3-6,6-4,10-7 |
| Bulgaria Liga Pro | 2021/06/23 17:00 | Vsevolod Fokin v Vitaliy Zaychikov | 6-1,6-1 |
| Bulgaria Liga Pro | 2021/07/20 18:30 | Dmitry Morgovsky v Aleksandr Repin | 6-2,6-4 |
| Bulgaria Liga Pro | 2021/07/20 17:00 | Aleksandr Repin v Dmitry Morgovsky | 6-1,6-0 |
| Bulgaria Liga Pro | 2021/07/18 18:30 | Dmitry Morgovsky v Artem Belousov | 4-6,5-7 |
| Bulgaria Liga Pro | 2021/07/18 17:00 | Artem Belousov v Dmitry Morgovsky | 6-2,6-2 |