| ITF M15 Heraklion | 2021/11/16 08:30 | Petr Nesterov v Ryan James Storrie | 4-6,1-6 |
| ITF M15 Heraklion | 2021/11/09 08:30 | Petr Nesterov v Alessandro Ragazzi | 5-7,6-4,3-6 |
| ITF M15 Sozopol | 2021/10/14 15:40 | Ben Patael v Petr Nesterov | 6-4,3-6,10-6 |
| ITF M15 Sozopol | 2021/10/13 10:00 | Simon A Ivanov v Petr Nesterov | 3-6,2-6 |
| ITF M15 Sozopol | 2021/10/05 10:00 | Alexandar Lazarov v Petr Nesterov | 6-1,6-1 |
| ITF M15 Sozopol | 2021/09/16 10:05 | Tommaso Compagnucci v Petr Nesterov | 6-2,6-0 |
| ITF M15 Sozopol | 2021/09/15 07:00 | Petr Nesterov v Caspar Schuetze | 6-1,6-3 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/15 06:00 | Petr Nesterov v Valentin Vanta | 6-2,6-3 |
| UTR Pro Tennis Series Barcelona | 2021/12/12 11:30 | Vladimir Popov v Martin Dimitrov | 4-6,4-6 |
| UTR Pro Tennis Series Zadar | 2021/11/20 09:00 | Martin Dimitrov v Robert Rumler | 2-6,4-4 |
| UTR Pro Tennis Series Zadar | 2021/11/19 12:00 | Alen Bill v Martin Dimitrov | 7-5,3-6,5-6 |
| UTR Pro Tennis Series Zadar | 2021/11/18 14:30 | Drazen Petrovic v Martin Dimitrov | 6-4,6-4 |
| UTR Pro Tennis Series Zadar | 2021/11/16 09:00 | Myroslav Bondar v Martin Dimitrov | 1-6,4-6 |
| UTR Pro Tennis Series Zadar | 2021/11/15 09:00 | Martin Dimitrov v Dorian Vasung | 6-3,0-0 |
| UTR Pro Tennis Series Brasov | 2021/10/30 11:00 | Martin Dimitrov v Dragos Constantin Ignat | 1-6,2-5 |
| UTR Pro Tennis Series Brasov | 2021/10/29 10:00 | Tudor Vlad Vasilache v Martin Dimitrov | 1-6,1-6 |