Stadium: Court 10 Round: 14 Ground: Clay
| Challenger Prague | 2021/05/03 12:15 | Zdenek Kolar v Matthias Bachinger | 6-1,6-1 |
| Challenger Prague | 2021/05/02 14:30 | Matthias Bachinger v Daniel Masur | 4-6,7-5,6-4 |
| Challenger Belgrade | 2021/04/12 10:00 | Dmitry Popko v Matthias Bachinger | 4-6,4-6 |
| Challenger Belgrade | 2021/04/11 10:00 | Malek Jaziri v Matthias Bachinger | 3-6,4-6 |
| Challenger Lugano | 2021/03/24 11:45 | Hiroki Moriya v Matthias Bachinger | 1-6,6-3,7-5 |
| Challenger Biella | 2021/03/21 10:00 | Daniel Masur v Matthias Bachinger | 6-3,6-7,7-5 |
| Challenger Biella | 2021/03/20 11:35 | Matthias Bachinger v Benjamin Bonzi | 7-5,6-4 |
| Challenger Biella | 2021/03/18 13:00 | Matthias Bachinger v Andreas Seppi | 6-3,7-5 |
| Challenger Heilbronn | 2021/05/09 11:30 | Tomas Martin Etcheverry v Maximilian Marterer | 7-6,7-6 |
| Challenger Prague | 2021/05/03 10:00 | Kacper Zuk v Tomas Martin Etcheverry | 6-2,6-3 |
| Challenger Prague | 2021/05/02 12:00 | Tomas Martin Etcheverry v Lukas Lacko | 6-1,6-3 |
| Challenger Ostrava | 2021/04/30 11:05 | Tomas Martin Etcheverry v Renzo Olivo | 4-6,4-6 |
| Challenger Ostrava | 2021/04/29 10:35 | Gregoire Barrere v Tomas Martin Etcheverry | 6-3,4-6,3-6 |
| Challenger Ostrava | 2021/04/27 14:00 | Zdenek Kolar v Tomas Martin Etcheverry | 6-1,4-6,2-6 |
| Challenger Tallahassee | 2021/04/19 18:30 | Thiago Seyboth Wild v Tomas Martin Etcheverry | 6-3,6-1 |
| Challenger Santiago | 2021/03/15 19:55 | Gonzalo Lama v Tomas Martin Etcheverry | 6-4,6-2 |