|
| QF | 2021 Tulin Challenger | Clay | L | Mate Valkusz | 6-0 6-1 | [H2H] |
|
| QF | 2021 M25 Ricany, Wk. 35 | Clay | L | Yshai Oliel | 6-3 4-6 6-4 | [H2H] |
| R16 | 2021 M25 Ricany, Wk. 35 | Clay | W | Filip Duda | 6-3 6-3 | [H2H] |
| R32 | 2021 M25 Ricany, Wk. 35 | Clay | W | Daniel Siniakov | 7-5 6-3 | [H2H] |
|
| QF | 2021 Prague 3 Challenger | Clay | L | Alex Rybakov | 7-5 6-1 | [H2H] |
|
| R16 | 2021 M25 Prostejov, Wk. 33 | Clay | L | Alex Rybakov | 6-3 6-3 | [H2H] |
| R32 | 2021 M25 Prostejov, Wk. 33 | Clay | W | Christopher Patzanovsky | 6-2 6-0 | [H2H] |
|
| QF | 2021 Prague 2 Challenger | Clay | L | Emilio Nava | 6-4 6-3 | [H2H] |
|
| R32 | 2021 M25 Grodzisk Mazowiecki, Wk. 31 | Clay | L | PHILIP Bachmaier | 6-3 6-4 | [H2H] |
|
| R16 | 2021 M15 Castelo Branco, Wk. 30 | Hard | L | Daniel Batista | 6-4 3-6 6-3 | [H2H] |
| R32 | 2021 M15 Castelo Branco, Wk. 30 | Hard | W | Ray Ho | 6-2 2-6 6-3 | [H2H] |
|
| R16 | 2021 M25 Idanha-a-Nova, Wk. 29 | Hard | L | Clement Chidekh | 6-4 7-6(3) | [H2H] |
| R32 | 2021 M25 Idanha-a-Nova, Wk. 29 | Hard | W | Joao Lucas REIS DA Silva | 7-5 6-0 | [H2H] |
|
| QF | 2021 Aix En Provence Challenger | Clay | L | Eduard Esteve Lobato | 6-0 6-1 | [H2H] |
|
| R32 | 2021 M15 Gaiba, Wk. 23 | Grass | L | Mats Rosenkranz | 4-6 7-5 6-1 | [H2H] |
|
| R32 | 2021 M25 Most, Wk. 21 | Clay | L | Antonin Bolardt | 7-6(7) 6-0 | [H2H] |
|
| QF | 2021 M15 Tbilisi, Wk. 20 | Hard | L | Alexander Shevchenko | 6-7(4) 6-4 6-4 | [H2H] |
| R16 | 2021 M15 Tbilisi, Wk. 20 | Hard | W | Aidan Mayo | 6-3 6-2 | [H2H] |
| R32 | 2021 M15 Tbilisi, Wk. 20 | Hard | W | Marat Deviatiarov | 6-1 6-4 | [H2H] |
|
| QF | 2021 M15 Jerusalem, Wk. 19 | Hard | L | Zane Khan | 7-5 7-6(3) | [H2H] |
| R16 | 2021 M15 Jerusalem, Wk. 19 | Hard | W | Alexandros Skorilas | 6-2 6-1 | [H2H] |
| R32 | 2021 M15 Jerusalem, Wk. 19 | Hard | W | Lorenzo Lorusso | 7-6(5) 6-4 | [H2H] |
|
| F | 2021 Salinas Challenger | Hard | L | Hernan Casanova | 3-6 6-4 7-5 | [H2H] |
| QF | 2021 Salinas Challenger | Hard | W | Gage Brymer | 6-4 5-7 6-2 | [H2H] |
|
| R32 | 2021 Salinas Challenger | Hard | L | Tak Khunn Wang | 6-2 6-3 | [H2H] |
|
| F | 2021 Salinas Challenger | Hard | W | Mathieu Perchicot | 6-3 3-6 7-5 | [H2H] |
| QF | 2021 Salinas Challenger | Hard | W | Omar Suarez | 6-1 6-1 | [H2H] |
|
| R32 | 2021 M15 Sharm El Sheikh, Wk. 13 | Hard | L | Aldin Setkic | 6-4 4-6 6-3 | [H2H] |
|
| SF | 2021 M15 Sharm El Sheikh, Wk. 12 | Hard | L | Makoto Ochi | 2-6 6-2 6-3 | [H2H] |
| QF | 2021 M15 Sharm El Sheikh, Wk. 12 | Hard | W | Petros Chrysochos | 6-2 6-3 | [H2H] |
