Stadium: Centre Round: 62 Ground: Clay
| ITF M25 Most | 2021/05/24 08:00 | Martin Damm v Adam Januska | 6-0,6-1 |
| ITF M25 Most | 2021/05/23 14:00 | Martin Damm v Ondrej Horak | 7-5,6-4 |
| ITF M25 Vic | 2021/05/17 09:00 | Miguel Damas v Martin Damm | 6-3,6-7,10-6 |
| ITF M15 Valldoreix | 2021/05/13 08:00 | Tiago Cacao v Martin Damm | 3-6,6-1,6-4 |
| ITF M15 Valldoreix | 2021/05/12 07:55 | Martin Damm v Vladyslav Orlov | 6-4,6-3 |
| Challenger Tallahassee | 2021/04/20 20:30 | Jenson Brooksby v Martin Damm | 6-7,6-1,6-2 |
| Challenger Orlando | 2021/04/13 20:20 | Michael Mmoh v Martin Damm | 6-4,4-6,6-1 |
| Challenger Orlando | 2021/04/12 20:35 | Martin Damm v JC Aragone | 3-6,7-5,6-3 |
| ITF M25 Most | 2021/05/24 09:00 | Roman Postolka v Dominik Recek | 3-6,7-6,6-10 |
| ITF M25 Most | 2021/05/23 14:00 | Martin Machala v Dominik Recek | 4-6,0-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/17 08:30 | Lenny Hampel v Dominik Recek | 6-2,7-5 |
| ITF M25 Prague | 2021/05/10 10:30 | Franco Agamenone v Dominik Recek | 6-0,6-2 |
| ITF M25 Prague | 2021/05/09 11:00 | Kris Krawcewicz v Dominik Recek | 6-2,5-7,7-10 |
| ITF M15 St Petersburg | 2021/04/12 07:00 | Sarp Agabigun v Dominik Recek | 6-4,6-2 |
| ITF M15 St Petersburg - selejtezők | 2021/04/11 13:55 | Dominik Recek v Evgeny Philippov | 7-5,6-3 |
| ITF M15 St Petersburg | 2021/04/05 06:55 | Yanki Erel v Dominik Recek | 7-5,6-2 |