| Bulgaria Liga Pro | 2021/07/16 04:30 | Alexey Nikiforov v Andrei Smirnov | 6-3,6-0 |
| Bulgaria Liga Pro | 2021/07/16 04:30 | Alexey Nikiforov v Andrei Smirnov | 6-3,6-0 |
| ITF Morocco F6 | 2014/11/15 10:00 | Rico Gore v Andrei Smirnov | 1-6,2-6 |
| Bulgaria Liga Pro | 2021/07/16 04:30 | Alexey Nikiforov v Andrei Smirnov | 6-3,6-0 |
| Bulgaria Liga Pro | 2021/07/06 06:00 | Vladislav Pryakhin v Alexey Nikiforov | 2-6,2-6 |
| Bulgaria Liga Pro | 2021/07/06 04:30 | Alexey Nikiforov v Vladislav Pryakhin | 6-4,6-3 |
| Bulgaria Liga Pro | 2021/07/04 06:00 | Alexey Nikiforov v Mikhail Suvorov | 6-2,5-7,10-12 |
| Bulgaria Liga Pro | 2021/07/04 04:30 | Mikhail Suvorov v Alexey Nikiforov | 5-7,4-6 |
| Bulgaria Liga Pro | 2021/07/02 06:00 | Alexey Nikiforov v Vladislav Pryakhin | 6-0,6-3 |
| Bulgaria Liga Pro | 2021/07/02 04:30 | Vladislav Pryakhin v Alexey Nikiforov | 2-6,4-6 |
| Bulgaria Liga Pro | 2021/06/27 06:00 | Ivan Korol v Alexey Nikiforov | 2-6,4-6 |