|
| QF | 2021 M25 Marburg, Wk. 27 | Clay | L | Amaury Raynel | 7-5 6-4 | [H2H] |
|
| R32 | 2021 M25 The Hague, Wk. 26 | Clay | L | Joao Lucas REIS DA Silva | 4-6 6-4 6-4 | [H2H] |
|
| QF | 2021 M15 Alkmaar, Wk. 25 | Clay | L | Deney Wassermann | 7-6(4) 6-7(2) 10-6 | [H2H] |
|
| QF | 2021 M15 Skopje, Wk. 23 | Clay | L | Plamen Milushev | w/o | [H2H] |
|
| R32 | 2021 M15 Skopje, Wk. 22 | Clay | L | Ryan Nijboer | 4-6 6-3 6-4 | [H2H] |
|
| F | 2021 M15 Skopje, Wk. 22 | Clay | W | Tom Gentzsch | 6-4 6-1 | [H2H] |
| SF | 2021 M15 Skopje, Wk. 22 | Clay | W | Lazar Milicevic | 6-7(4) 6-3 12-10 | [H2H] |
| QF | 2021 M15 Skopje, Wk. 22 | Clay | W | Petyr Kardzhiev | 6-0 6-0 | [H2H] |
|
| R16 | 2021 M15 Valldoreix, Wk. 19 | Clay | L | Rayane Roumane | 6-4 2-6 6-4 | [H2H] |
| R32 | 2021 M15 Valldoreix, Wk. 19 | Clay | W | Georgii Kravchenko | 7-6(3) 6-1 | [H2H] |
|
| F | 2021 M15 Valldoreix, Wk. 19 | Clay | W | Francisco Cabral | 7-5 6-0 | [H2H] |
| SF | 2021 M15 Valldoreix, Wk. 19 | Clay | W | Pierre Delage | 6-4 6-2 | [H2H] |
| QF | 2021 M15 Valldoreix, Wk. 19 | Clay | W | Alejandro MORO Canas | 3-6 6-2 10-6 | [H2H] |
|
| R16 | 2021 M15 Majadahonda, Wk. 18 | Clay | L | Georgii Kravchenko | 2-6 6-3 6-2 | [H2H] |
| R32 | 2021 M15 Majadahonda, Wk. 18 | Clay | W | Dominic Stephan Stricker | 3-6 6-3 6-3 | [H2H] |
|
| F | 2021 M15 Majadahonda, Wk. 18 | Clay | W | Remy Bertola | 6-3 6-4 | [H2H] |
| SF | 2021 M15 Majadahonda, Wk. 18 | Clay | W | Miguel Damas | 6-4 6-3 | [H2H] |
| QF | 2021 M15 Majadahonda, Wk. 18 | Clay | W | Vicente Oliver Moratalla | 6-2 6-4 | [H2H] |
|
| R16 | 2021 M25 Meerbusch, Wk. 15 | Clay | L | Elmar Ejupovic | 6-2 6-3 | [H2H] |
| R32 | 2021 M25 Meerbusch, Wk. 15 | Clay | W | Louis Wessels | 6-2 6-2 | [H2H] |
|
| F | 2021 M25 Meerbusch, Wk. 15 | Clay | W | Mark Owen Endler | 6-1 6-2 | [H2H] |
| SF | 2021 M25 Meerbusch, Wk. 15 | Clay | W | Floris Podzimek | 6-3 6-2 | [H2H] |
| QF | 2021 M25 Meerbusch, Wk. 15 | Clay | W | Tommaso Compagnucci | 6-3 6-1 | [H2H] |
|
| R32 | 2021 M15 Sharm El Sheikh, Wk. 11 | Hard | L | Mikolaj Lorens | 7-5 6-4 | [H2H] |
|
| F | 2021 M15 Sharm El Sheikh, Wk. 11 | Hard | W | Maik Steiner | 6-3 6-4 | [H2H] |
| SF | 2021 M15 Sharm El Sheikh, Wk. 11 | Hard | W | Ondrej Horak | 6-7(3) 7-6(3) 13-11 | [H2H] |
| QF | 2021 M15 Sharm El Sheikh, Wk. 11 | Hard | W | Ilya Lebedev (2003) | 6-1 1-1 ret. | [H2H] |
|
| R16 | 2021 M15 Sharm El Sheikh, Wk. 10 | Hard | L | Petros Chrysochos | 6-3 6-3 | [H2H] |
| R32 | 2021 M15 Sharm El Sheikh, Wk. 10 | Hard | W | Makoto Ochi | 4-6 6-3 7-6(6) | [H2H] |
|
| F | 2021 M15 Sharm El Sheikh, Wk. 10 | Hard | W | Petr Michnev | 6-3 2-6 10-5 | [H2H] |
