Stadium: Centre Court Round: 14 Ground: Clay
| Challenger Forli | 2021/12/05 17:00 | Matthias Bachinger v Maxime Cressy | 4-6,2-6 |
| Challenger Forli | 2021/12/04 16:00 | Matthias Bachinger v Jurij Rodionov | 4-6,7-5,6-2 |
| Challenger Forli | 2021/12/03 12:35 | Matthias Bachinger v Altug Celikbilek | 7-6,7-5 |
| Challenger Forli | 2021/11/30 19:25 | Alexander Ritschard v Matthias Bachinger | 3-6,4-6 |
| Challenger Bari | 2021/11/23 10:30 | Matthias Bachinger v Andrea Pellegrino | 6-4,4-6,4-6 |
| Challenger Helsinki | 2021/11/15 15:30 | Kimmer Coppejans v Matthias Bachinger | 4-6,4-6 |
| Challenger Ortisei | 2021/11/10 16:00 | Oscar Otte v Matthias Bachinger | 6-3,6-1 |
| Challenger Ortisei | 2021/11/09 10:20 | Matthias Bachinger v Tobias Simon | 6-3,6-7,7-6 |
| ITF M25 Prague | 2021/10/05 08:00 | Filip Duda v Daniel Siniakov | 6-1,6-4 |
| ITF M25 Pardubice | 2021/09/23 12:30 | Daniel Siniakov v Eric Vanshelboim | 6-4,1-6,2-6 |
| ITF M25 Pardubice | 2021/09/22 11:05 | Daniel Siniakov v Stefanos Sakellaridis | 6-3,6-2 |
| ITF M25 Ricany | 2021/09/01 09:05 | Marek Gengel v Daniel Siniakov | 7-5,6-3 |
| Challenger Prague | 2021/08/24 13:45 | Daniel Siniakov v Igor Sijsling | 4-6,3-6 |
| ITF M25 Prostejov | 2021/08/17 09:15 | Martin Krumich v Daniel Siniakov | 3-6,6-4,7-5 |
| Challenger Liberec | 2021/08/03 15:10 | Nikola Milojevic v Daniel Siniakov | 7-5,6-0 |
| Challenger Liberec | 2021/08/02 10:35 | Daniel Siniakov v David Vega Hernandez | 6-3,7-5 |