|
| R16 | 2021 M25 Trier, Wk. 34 | Clay | L | Tim Handel | 6-2 3-6 6-2 | [H2H] |
| R32 | 2021 M25 Trier, Wk. 34 | Clay | W | Laurent Lokoli | 6-2 3-6 7-6(5) | [H2H] |
|
| R16 | 2021 M15 Ueberlingen, Wk. 33 | Clay | L | Tim Handel | 6-3 6-4 | [H2H] |
| R32 | 2021 M15 Ueberlingen, Wk. 33 | Clay | W | Jeremy Jahn | 6-3 6-7(9) 6-1 | [H2H] |
|
| F | 2021 Segovia Challenger | Hard | L | Dalibor Svrcina | 6-1 2-6 6-2 | [H2H] |
| QF | 2021 Segovia Challenger | Hard | W | Federico Zeballos | 6-1 6-1 | [H2H] |
|
| R16 | 2021 M25 Idanha-a-Nova, Wk. 29 | Hard | L | Nicolas Moreno De Alboran | 3-6 7-6(0) 7-6(6) | [H2H] |
| R32 | 2021 M25 Idanha-a-Nova, Wk. 29 | Hard | W | Mehluli Don Ayanda Sibanda | 6-3 6-0 | [H2H] |
|
| QF | 2021 M25 Idanha-a-Nova, Wk. 28 | Hard | L | Zane Khan | 6-0 7-5 | [H2H] |
| R16 | 2021 M25 Idanha-a-Nova, Wk. 28 | Hard | W | Francisco Cabral | 7-5 6-4 | [H2H] |
| R32 | 2021 M25 Idanha-a-Nova, Wk. 28 | Hard | W | Sho Shimabukuro | 6-3 3-6 7-6(4) | [H2H] |
|
| R16 | 2021 M25 Belgrade, Wk. 26 | Clay | L | Edoardo Lavagno | 6-4 6-3 | [H2H] |
| R32 | 2021 M25 Belgrade, Wk. 26 | Clay | W | Aldin Setkic | 6-7(6) 7-5 4-0 ret. | [H2H] |
|
| R32 | 2021 M15 Skopje, Wk. 23 | Clay | L | Alexander Weis | 7-5 6-4 | [H2H] |
|
| QF | 2021 M15 Kouvola, Wk. 21 | Hard | L | Alessandro Bega | 6-4 6-0 | [H2H] |
| R16 | 2021 M15 Kouvola, Wk. 21 | Hard | W | Karl Kiur Saar | 6-0 6-1 | [H2H] |
| R32 | 2021 M15 Kouvola, Wk. 21 | Hard | W | Dominik Palan | 7-6(3) 6-2 | [H2H] |
|
| R32 | 2021 M15 Tbilisi, Wk. 20 | Hard | L | Zane Khan | 3-6 6-4 6-0 | [H2H] |
|
| R16 | 2021 M15 Jerusalem, Wk. 19 | Hard | L | Yshai Oliel | 6-3 4-6 6-3 | [H2H] |
| R32 | 2021 M15 Jerusalem, Wk. 19 | Hard | W | Keenan Mayo | 6-2 4-6 6-2 | [H2H] |
|
| QF | 2021 M15 Ramat Hasharon, Wk. 18 | Hard | L | Edan Leshem | 6-2 3-6 6-3 | [H2H] |
| R16 | 2021 M15 Ramat Hasharon, Wk. 18 | Hard | W | Dominik Palan | 4-6 7-6(4) 7-6(4) | [H2H] |
| R32 | 2021 M15 Ramat Hasharon, Wk. 18 | Hard | W | Roi Ginat | 6-1 6-3 | [H2H] |
|
| R32 | 2021 M15 St. Petersburg, Wk. 15 | Hard | L | Yanki Erel | 7-6(5) 7-6(2) | [H2H] |
|
| SF | 2021 M15 St. Petersburg, Wk. 14 | Hard | L | Ivan Nedelko | 2-6 6-4 6-3 | [H2H] |
| QF | 2021 M15 St. Petersburg, Wk. 14 | Hard | W | Artem Dubrivnyy | 6-4 6-7(3) 6-3 | [H2H] |
| R16 | 2021 M15 St. Petersburg, Wk. 14 | Hard | W | Evgeny Tyurnev | 2-6 6-3 6-2 | [H2H] |
| R32 | 2021 M15 St. Petersburg, Wk. 14 | Hard | W | Boris Pokotilov | 6-0 6-0 | [H2H] |
|
| R32 | 2021 M15 Antalya, Wk. 13 | Clay | L | Sanjar Fayziev | 6-4 6-3 | [H2H] |
|
| QF | 2021 M15 Antalya, Wk. 12 | Clay | L | Taiyo Yamanaka | 6-3 6-3 | [H2H] |
