Stadion: Court 6 Round: 25 Ground: Clay
| ITF - M15 - Bratislava | 2021/08/25 08:00 | Palaphoom Kovapitukted v Jiri Barnat | 6-3,6-7,6-1 |
| ITF - M15 - Bratislava | 2021/08/24 08:00 | Jiri Barnat v Jakub Kroslak | 6-3,7-5 |
| ITF - M15 - Bratislava | 2021/08/23 09:00 | Jiri Barnat v Radovan Michalik | 7-5,6-0 |
| ITF - M15 - Bratislava | 2021/08/18 09:30 | Jiri Barnat v Fabian Marozsan | 4-6,2-6 |
| ITF - M15 - Bratislava | 2021/08/17 08:00 | Eric Morris v Jiri Barnat | 4-6,6-7 |
| ITF - M25 - Prag | 2021/05/10 09:00 | Adam Pavlasek v Jiri Barnat | 6-3,4-6,14-12 |
| ITF - M25 - Prag | 2021/05/09 10:00 | Victor Vlad Cornea v Jiri Barnat | 5-7,6-3,9-11 |
| ITF - M15 - Sharm El Sheikh | 2021/02/07 13:00 | Chien Hsun Lo v Jiri Barnat | 6-3,6-2 |
| Challenger - Prag | 2021/08/23 11:20 | Michael Geerts v Martin Krumich | 6-2,6-4 |
| ITF - M25 - Prostejov | 2021/08/18 08:00 | Martin Krumich v Nikolas Sanchez Izquierdo | 0-6,2-6 |
| ITF - M25 - Prostejov | 2021/08/17 09:15 | Martin Krumich v Daniel Siniakov | 3-6,6-4,7-5 |
| Challenger - Prag | 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 |