|
| R32 | 2021 Kyiv Challenger | Clay | L | Sebastian Baez | 6-3 7-5 | [H2H] |
|
| F | 2021 M15 Chornomorsk, Wk. 35 | Clay | W | Ilya Snitari | 7-6(3) 7-6(6) | [H2H] |
| SF | 2021 M15 Chornomorsk, Wk. 35 | Clay | W | Yan Bondarevskiy | 3-6 6-4 6-3 | [H2H] |
| QF | 2021 M15 Chornomorsk, Wk. 35 | Clay | W | Artem Podorozhnyi | 6-1 7-6(2) | [H2H] |
| R16 | 2021 M15 Chornomorsk, Wk. 35 | Clay | W | Clement Tabur | 5-7 6-3 6-0 | [H2H] |
| R32 | 2021 M15 Chornomorsk, Wk. 35 | Clay | W | Lev Levyatov | 6-2 6-1 | [H2H] |
|
| F | 2021 M15 Gdynia, Wk. 32 | Clay | L | Antonin Bolardt | 7-6(5) 6-1 | [H2H] |
| SF | 2021 M15 Gdynia, Wk. 32 | Clay | W | Alexander Wolfschmidt | 6-1 6-2 | [H2H] |
|
| QF | 2021 M25 Grodzisk Mazowiecki, Wk. 31 | Clay | L | Pawel Cias | 6-2 6-3 | [H2H] |
| R16 | 2021 M25 Grodzisk Mazowiecki, Wk. 31 | Clay | W | Pedro Sakamoto | 6-4 6-4 | [H2H] |
| R32 | 2021 M25 Grodzisk Mazowiecki, Wk. 31 | Clay | W | Dawid Taczala | 6-1 6-2 | [H2H] |
|
| R16 | 2021 M15 Poprad, Wk. 27 | Clay | L | Tomas Jirousek | 6-4 6-0 | [H2H] |
| R32 | 2021 M15 Poprad, Wk. 27 | Clay | W | Daniel Siniakov | 3-6 7-6(4) 7-5 | [H2H] |
|
| F | 2021 M15 Poprad, Wk. 27 | Clay | W | Mateusz Terczynski | 6-4 6-2 | [H2H] |
| QF | 2021 M15 Poprad, Wk. 27 | Clay | W | Piotr Pawlak | 6-0 6-7(2) 10-6 | [H2H] |
|
| R16 | 2021 M25 Wroclaw, Wk. 26 | Clay | L | Hernan Casanova | 6-2 6-1 | [H2H] |
| R32 | 2021 M25 Wroclaw, Wk. 26 | Clay | W | Marco Bortolotti | 6-3 6-3 | [H2H] |
|
| F | 2021 M25 Wroclaw, Wk. 26 | Clay | W | Daniel Siniakov | 4-6 6-4 10-6 | [H2H] |
| SF | 2021 M25 Wroclaw, Wk. 26 | Clay | W | Alessandro Procopio | 6-2 6-4 | [H2H] |
| QF | 2021 M25 Wroclaw, Wk. 26 | Clay | W | Daniel Paty | 6-4 6-4 | [H2H] |
|
| SF | 2021 M15 Novomoskovsk, Wk. 22 | Clay | L | Matias Zukas | 7-5 6-4 | [H2H] |
| QF | 2021 M15 Novomoskovsk, Wk. 22 | Clay | W | Yurii Dzhavakian | 6-3 7-5 | [H2H] |
| R16 | 2021 M15 Novomoskovsk, Wk. 22 | Clay | W | Oleksii Krutykh | 3-6 6-2 10-6 | [H2H] |
| R32 | 2021 M15 Novomoskovsk, Wk. 22 | Clay | W | Nikita Alosha Ushakov | 6-3 2-6 10-5 | [H2H] |
|
| QF | 2021 M15 Novomoskovsk, Wk. 21 | Clay | L | Bruno PUJOL Navarro | 6-2 2-6 10-7 | [H2H] |
|
| R32 | 2021 M15 St. Petersburg, Wk. 15 | Hard | L | Konstantin Kravchuk | 4-6 6-3 6-2 | [H2H] |
|
| F | 2021 M15 St. Petersburg, Wk. 14 | Hard | W | Ivan Nedelko | | [H2H] |
| SF | 2021 M15 St. Petersburg, Wk. 14 | Hard | W | Jan Satral | 7-5 6-3 | [H2H] |
| QF | 2021 M15 St. Petersburg, Wk. 14 | Hard | W | Yanki Erel | 7-6(2) 2-6 6-3 | [H2H] |
| R16 | 2021 M15 St. Petersburg, Wk. 14 | Hard | W | Gijs Brouwer | w/o | [H2H] |
