Stadium: Center Court Round: 27 Ground: Clay
| Challenger Braunschweig | 2021/07/07 09:30 | Sumit Nagal v Marvin Moeller | 3-6,6-1,2-6 |
| Challenger Braunschweig | 2021/07/06 10:30 | Marvin Moeller v Teymuraz Gabashvili | 7-5,6-3 |
| ITF M25 Wroclaw | 2021/06/28 09:30 | Marvin Moeller v Matej Galik | 6-3,6-7,11-13 |
| ITF M25 Wroclaw | 2021/06/27 11:00 | Marvin Moeller v Jasza Szajrych | 6-2,6-1 |
| ITF M25 Alkmaar | 2021/06/25 11:30 | Nicolas Alvarez Varona v Marvin Moeller | 6-1,6-4 |
| ITF M25 Alkmaar | 2021/06/24 09:00 | Deney Wassermann v Marvin Moeller | 6-7,7-6,3-6 |
| ITF M25 Alkmaar | 2021/06/23 10:55 | Marvin Moeller v Jeremy Jahn | 6-2,6-0 |
| ITF M25 Alkmaar | 2021/06/21 17:30 | Marvin Moeller v Michiel de Krom | 2-6,6-4,10-3 |
| Challenger Braunschweig | 2021/07/07 12:55 | Sandro Ehrat v Benjamin Hassan | 6-4,3-6,4-6 |
| Challenger Braunschweig | 2021/07/06 10:30 | Benjamin Hassan v Dayne Kelly | 6-4,7-6 |
| Challenger Braunschweig | 2021/07/05 12:55 | Benjamin Hassan v Mats Rosenkranz | 2-6,2-6 |
| Challenger Braunschweig | 2021/07/04 14:25 | Prajnesh Gunneswaran v Benjamin Hassan | 5-7,4-6 |
| ITF M25 Alkmaar | 2021/06/22 08:55 | Gijs Brouwer v Benjamin Hassan | 1-6,7-6,7-5 |
| Challenger Almaty | 2021/06/14 06:10 | Vitaliy Sachko v Benjamin Hassan | 4-6,6-3,6-1 |
| Challenger Almaty - selejtezők | 2021/06/13 10:05 | Tsung-Hua Yang v Benjamin Hassan | 1-6,3-6 |
| Challenger Almaty | 2021/06/07 04:00 | Evan Furness v Benjamin Hassan | 6-3,3-6,6-4 |