Stadium: Court 4 Round: 62 Ground: Clay
| ITF - M15 Petrohrad | 2021/04/14 13:10 | Jan Šátral v Daniil Glinka | 4-6,2-6 |
| ITF - M15 Petrohrad | 2021/04/10 08:00 | Jan Šátral v Illya Beloborodko | 5-7,3-6 |
| ITF - M15 Petrohrad | 2021/04/09 09:40 | Aristarkh Safonov v Jan Šátral | 4-6,2-6 |
| ITF - M15 Petrohrad | 2021/04/08 09:00 | Daniil Glinka v Jan Šátral | 4-6,3-6 |
| ITF - M15 Petrohrad | 2021/04/06 10:00 | Alexandr Binda v Jan Šátral | 2-6,1-6 |
| ITF - M15 Bratislava | 2021/03/11 12:10 | Jan Šátral v Jurgen Briand | 6-7,6-4,2-6 |
| ITF - M15 Bratislava | 2021/03/10 12:05 | Jan Šátral v Lenny Hampel | 6-4,6-3 |
| ITF - M15 Sharm El Sheikh | 2021/02/14 07:30 | Jan Šátral v Marek Gengel | 2-6,2-6 |
| ITF - M25 Praha | 2021/05/09 10:00 | Ondrej Horak v Jan Jermar | 7-6,6-3 |
| ITF - M15 Šibenik | 2021/04/20 08:00 | Alen Rogic-Hadzalic v Ondrej Horak | 6-1,6-4 |
| ITF - M15 Šibenik | 2021/04/19 12:15 | Ondrej Horak v Boris Butulija | 6-2,7-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/24 11:20 | Ondrej Horak v Paul Jubb | 2-6,0-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/15 07:30 | Niels Visker v Ondrej Horak | 6-7,7-6,13-11 |