|
| R16 | 2021 M15 Lodz, Wk. 33 | Clay | L | Maciej Rajski | 7-6(4) 6-2 | [H2H] |
| R32 | 2021 M15 Lodz, Wk. 33 | Clay | W | Jasza Szajrych | 6-0 7-6(4) | [H2H] |
|
| R16 | 2021 M15 Gdynia, Wk. 32 | Clay | L | Daniel Michalski | 7-6(4) 4-6 6-3 | [H2H] |
| R32 | 2021 M15 Gdynia, Wk. 32 | Clay | W | Pawel Safuryn | 6-0 6-1 | [H2H] |
|
| R16 | 2021 M25 Grodzisk Mazowiecki, Wk. 31 | Clay | L | David Poljak | 6-3 3-6 6-3 | [H2H] |
| R32 | 2021 M25 Grodzisk Mazowiecki, Wk. 31 | Clay | W | Alan Bojarski | 6-3 4-6 6-2 | [H2H] |
|
| R16 | 2021 M25 Telavi, Wk. 30 | Clay | L | Alessandro Ingarao | 6-2 6-1 | [H2H] |
| R32 | 2021 M25 Telavi, Wk. 30 | Clay | W | Alexander Boborykin | 7-5 6-2 | [H2H] |
|
| R16 | 2021 M25 Wroclaw, Wk. 26 | Clay | L | Alexander Shevchenko | 6-4 6-2 | [H2H] |
| R32 | 2021 M25 Wroclaw, Wk. 26 | Clay | W | Aziz Dougaz | 6-2 6-4 | [H2H] |
|
| R32 | 2021 M15 Antalya, Wk. 24 | Clay | L | Christopher Heyman | 6-0 6-2 | [H2H] |
|
| R16 | 2021 M15 Novomoskovsk, Wk. 21 | Clay | L | Felix Gill | 6-3 7-5 | [H2H] |
| R32 | 2021 M15 Novomoskovsk, Wk. 21 | Clay | W | Artem Podorozhnyi | 6-1 6-2 | [H2H] |
|
| R16 | 2021 M15 Monastir, Wk. 16 | Hard | L | Simon Yitbarek | 6-2 1-6 6-1 | [H2H] |
| R32 | 2021 M15 Monastir, Wk. 16 | Hard | W | Iiro Vasa | 7-5 5-7 6-2 | [H2H] |
|
| R32 | 2021 M15 Monastir, Wk. 15 | Hard | L | Eliakim Coulibaly | 3-6 6-3 6-2 | [H2H] |
|
| R16 | 2021 M15 Monastir, Wk. 14 | Hard | L | Eliakim Coulibaly | 4-6 7-6(4) 6-2 | [H2H] |
| R32 | 2021 M15 Monastir, Wk. 14 | Hard | W | Michal Mikula | 7-6(3) 7-6(5) | [H2H] |
|
| SF | 2021 M15 Bratislava, Wk. 10 | Hard | L | Fabian Marozsan | 3-6 6-3 6-0 | [H2H] |
| QF | 2021 M15 Bratislava, Wk. 10 | Hard | W | Aleksander Orlikowski | 7-6(11) 2-6 6-3 | [H2H] |
| R16 | 2021 M15 Bratislava, Wk. 10 | Hard | W | Gabriel Petit | 6-3 6-3 | [H2H] |
| R32 | 2021 M15 Bratislava, Wk. 10 | Hard | W | Petr Nouza | 6-7(1) 7-6(3) 6-4 | [H2H] |
|
| R16 | 2021 M15 Bratislava, Wk. 9 | Hard | L | Jurgen Briand | 6-3 6-4 | [H2H] |
| R32 | 2021 M15 Bratislava, Wk. 9 | Hard | W | Aleksander Orlikowski | 7-6(7) 1-6 7-6(6) | [H2H] |
|
| F | 2021 M15 Nur-Sultan, Wk. 6 | Hard | W | Riccardo Balzerani | 6-3 7-6(4) | [H2H] |
| SF | 2021 M15 Nur-Sultan, Wk. 6 | Hard | W | Francesco Forti | 6-2 6-0 | [H2H] |
| QF | 2021 M15 Nur-Sultan, Wk. 6 | Hard | W | Yaraslav Shyla | 6-0 6-4 | [H2H] |
| R16 | 2021 M15 Nur-Sultan, Wk. 6 | Hard | W | Matteo Donati | 4-6 6-3 6-0 | [H2H] |
| R32 | 2021 M15 Nur-Sultan, Wk. 6 | Hard | W | Timofey Skatov | 6-3 6-4 | [H2H] |
|
| SF | 2021 M15 Nur-Sultan, Wk. 5 | Hard | L | Otto Virtanen | 3-6 6-3 6-4 | [H2H] |
