| UTR Pro Tennis Series Zadar | 2021/11/16 10:30 | Ivan Penev v Oleksii Osadchyi | 6-1,6-1 |
| UTR Pro Tennis Series Zadar | 2021/11/15 13:30 | Ivan Penev v Vladan Tadic | 4-6,6-4,0-6 |
| UTR Pro Tennis Series Zadar | 2021/11/14 12:00 | Alen Rogic-Hadzalic v Ivan Penev | 6-3,4-6,6-2 |
| ITF M15 Sozopol | 2021/10/11 09:00 | Ivan Penev v Berk Ilkel | 6-7,6-1,8-10 |
| ITF M15 Sozopol | 2021/10/10 09:00 | Ivan Penev v Gianluca Coloma-Heck | 6-1,6-3 |
| ITF M15 Sozopol | 2021/10/04 07:00 | Yann Wojcik v Ivan Penev | 3-6,7-5,10-2 |
| ITF M15 Sozopol | 2021/09/13 10:30 | Tommaso Compagnucci v Ivan Penev | 6-2,6-3 |
| ITF M15 Sozopol | 2021/09/12 10:00 | Radu F Macovei v Ivan Penev | 4-6,3-6 |
| UTR Pro Tennis Series Zadar | 2021/11/18 12:00 | Deni Zmak v Alexander Lazov | 6-3,6-7,5-3 |
| UTR Pro Tennis Series Zadar | 2021/11/16 10:30 | Jose A R Rodriguez v Alexander Lazov | 1-6,2-6 |
| UTR Pro Tennis Series Zadar | 2021/11/14 15:20 | Graham Maassen v Alexander Lazov | 6-2,6-4 |
| UTR Pro Tennis Series Brasov | 2021/10/30 09:30 | Stefan A Andreescu v Alexander Lazov | 6-3,7-5 |
| UTR Pro Tennis Series Brasov | 2021/10/29 10:00 | Yurii Dzhavakian v Alexander Lazov | 6-2,6-4 |
| UTR Pro Tennis Series Brasov | 2021/10/28 07:00 | Vlad Andrei Dancu v Alexander Lazov | 6-3,7-5 |
| UTR Pro Tennis Series Brasov | 2021/10/27 08:30 | Tudor Vlad Vasilache v Alexander Lazov | 6-2,3-6,2-6 |
| UTR Pro Tennis Series Brasov | 2021/10/25 11:30 | Martin Dimitrov v Alexander Lazov | 5-7,4-6 |