Stadium: Centre Round: 62 Ground: Clay
| ITF - Most M25 | 2021/05/23 14:00 | Martin Damm v Ondrej Horak | 7-5,6-4 |
| ITF - Vic M25 | 2021/05/17 09:00 | Miguel Damas v Martin Damm | 6-3,6-7,10-6 |
| ITF - Valldoreix M15 | 2021/05/13 08:00 | Tiago Cacao v Martin Damm | 3-6,6-1,6-4 |
| ITF - Valldoreix M15 | 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 |
| Challenger Orlando | 2021/04/12 14:00 | Hiroki Moriya v Martin Damm | 3-6,6-3,0-6 |
| ITF - Most M25 | 2021/05/23 08:00 | Adam Januska v Vitek Horak | 6-3,6-4 |
| ITF - Jablonec Nad Nisou M25 | 2021/05/16 07:30 | Adam Januska v Antonin Stepanek | 1-6,2-6 |