|
| R16 | 2021 M15 Kazan, Wk. 41 | Hard | L | Benjamin Lock | 4-6 6-3 6-4 | [H2H] |
| R32 | 2021 M15 Kazan, Wk. 41 | Hard | W | Radimir Lutkovskii | 6-4 6-4 | [H2H] |
|
| QF | 2021 Napoli Challenger | Clay | L | Julian Ocleppo | 6-4 6-0 | [H2H] |
|
| QF | 2021 M15 Vyshkovo, Wk. 38 | Clay | L | Tommaso Compagnucci | 3-6 7-5 6-1 | [H2H] |
| R16 | 2021 M15 Vyshkovo, Wk. 38 | Clay | W | Nathan Seateun | 7-6(8) 7-6(5) | [H2H] |
| R32 | 2021 M15 Vyshkovo, Wk. 38 | Clay | W | Dragos Constantin Ignat | 6-2 6-3 | [H2H] |
|
| F | 2021 Kyiv Challenger | Clay | L | Alex Rybakov | 6-3 6-4 | [H2H] |
| QF | 2021 Kyiv Challenger | Clay | W | Alexandar Lazarov | 7-6(4) 6-4 | [H2H] |
|
| R16 | 2021 M15 Chornomorsk, Wk. 35 | Clay | L | Ilya Snitari | 2-6 6-1 6-2 | [H2H] |
| R32 | 2021 M15 Chornomorsk, Wk. 35 | Clay | W | Vladyslav Manafov | 7-6(2) 7-6(1) | [H2H] |
|
| R16 | 2021 M15 Sofia, Wk. 27 | Clay | L | Nikita Mashtakov | 6-4 6-2 | [H2H] |
| R32 | 2021 M15 Sofia, Wk. 27 | Clay | W | Denys Klok | 6-4 6-3 | [H2H] |
|
| F | 2021 M15 Sofia, Wk. 27 | Clay | W | Adriano Dzhenev | 7-5 6-4 | [H2H] |
| SF | 2021 M15 Sofia, Wk. 27 | Clay | W | Maxim Krapivin | 6-4 6-3 | [H2H] |
| QF | 2021 M15 Sofia, Wk. 27 | Clay | W | Viktor Grigorov | 6-1 6-0 | [H2H] |
|
| QF | 2021 M15 Novomoskovsk, Wk. 22 | Clay | L | Alex MARTI Pujolras | 6-1 3-6 6-3 | [H2H] |
| R16 | 2021 M15 Novomoskovsk, Wk. 22 | Clay | W | Ivan Nedelko | w/o | [H2H] |
| R32 | 2021 M15 Novomoskovsk, Wk. 22 | Clay | W | Benjamin Dhoe | 6-4 5-7 10-3 | [H2H] |
|
| F | 2021 M15 Novomoskovsk, Wk. 22 | Clay | W | Timur Maulenov | 6-1 3-1 ret. | [H2H] |
| SF | 2021 M15 Novomoskovsk, Wk. 22 | Clay | W | Simon Sedliak | 7-6(0) 6-1 | [H2H] |
| QF | 2021 M15 Novomoskovsk, Wk. 22 | Clay | W | Artem Mazur | 6-2 6-2 | [H2H] |
|
| R32 | 2021 M15 Novomoskovsk, Wk. 21 | Clay | L | Matteo Arnaldi | 6-1 6-3 | [H2H] |
|
| F | 2021 M15 Novomoskovsk, Wk. 21 | Clay | W | Martin Dimitrov | 7-6(0) 6-2 | [H2H] |
| SF | 2021 M15 Novomoskovsk, Wk. 21 | Clay | W | Sergo Sikharulidze | 6-2 6-0 | [H2H] |
| QF | 2021 M15 Novomoskovsk, Wk. 21 | Clay | W | Myroslav Bondar | 6-4 6-1 | [H2H] |
|
| R16 | 2021 M15 Tbilisi, Wk. 20 | Hard | L | Alexander Shevchenko | 7-5 6-3 | [H2H] |
| R32 | 2021 M15 Tbilisi, Wk. 20 | Hard | W | Julius Tverijonas | 6-4 7-5 | [H2H] |
|
| F | 2021 M15 Tbilisi, Wk. 20 | Hard | W | Ivan Kazakov | 6-2 6-2 | [H2H] |
| SF | 2021 M15 Tbilisi, Wk. 20 | Hard | W | Stefan Cizelj-Zivkovic | 6-4 6-3 | [H2H] |
|
| R16 | 2021 M15 Shymkent, Wk. 15 | Clay | L | Jose Fco. Vidal Azorin | 6-3 1-6 6-3 | [H2H] |
