Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| Challenger Prague | 2021/08/09 12:30 | Evan Furness v Martin Krumich | 4-6,6-4,6-3 |
| Challenger Liberec | 2021/08/01 12:30 | Evan Furness v Martin Krumich | 6-3,6-2 |
| ITF M25 Kottingbrunn | 2021/07/22 10:10 | Pavel Nejedly v Martin Krumich | 6-3,4-6,6-2 |
| ITF M25 Kottingbrunn | 2021/07/21 09:30 | Martin Krumich v Lukas Neumayer | 7-5,6-2 |
| ITF M25 Kottingbrunn | 2021/07/20 08:00 | Martin Krumich v Lukas Palovic | 7-5,6-2 |
| ITF M25 Kottingbrunn | 2021/07/19 11:05 | Martin Krumich v Francisco T Geschwind | 6-1,6-3 |
| ITF M15 Doboj | 2021/07/17 11:15 | Martin Krumich v Peter Fajta | 2-6,3-6 |
| ITF M15 Doboj | 2021/07/16 11:15 | Gergely Madarasz v Martin Krumich | 2-6,7-5,1-6 |
| ITF M15 Curtea de Arges | 2021/08/08 08:00 | Valentin Vanta v Stefan Palosi | 1-6,3-6 |
| ITF M25 Pitesti | 2021/08/02 06:00 | Valentin Vanta v Edris Fetisleam | 1-6,4-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/18 07:30 | Vasil Kirkov v Valentin Vanta | 6-3,7-5 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/17 09:00 | Denislav Prodanov v Valentin Vanta | 2-6,3-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/16 10:30 | Yurii Dzhavakian v Valentin Vanta | 5-7,3-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/15 06:00 | Petr Nesterov v Valentin Vanta | 6-2,6-3 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/14 09:00 | Arthus De La Bassetiere v Valentin Vanta | 3-6,1-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/12 10:30 | Alexander Lazov v Valentin Vanta | 7-6,2-6,4-6 |