Stadium: Court 3 Round: 25 Ground: Hardcourt indoor
| ITF M25 Wroclaw | 2021/06/27 12:30 | Szymon Kielan v Stepan Pecak | 4-6,6-4,10-8 |
| ITF M15 Antalya | 2021/06/13 07:30 | Thiago Cigarran v Stepan Pecak | 6-2,3-6,10-2 |
| ITF M15 Antalya | 2021/06/06 07:30 | Edouard Villoslada v Stepan Pecak | 6-0,6-0 |
| ITF M25 Most | 2021/05/23 14:00 | Stepan Pecak v Roman Postolka | 4-6,1-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/17 10:00 | Titouan Droguet v Stepan Pecak | 6-0,6-1 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 10:00 | Tomas Krcma v Stepan Pecak | 3-6,1-6 |
| ITF M25 Prague | 2021/05/10 09:00 | Stepan Pecak v Jean Thirouin | 2-6,5-7 |
| ITF M15 St Petersburg | 2021/04/12 08:35 | Matvey Minin v Stepan Pecak | 7-5,6-3 |
| Challenger Braunschweig | 2021/07/10 09:00 | Daniel Altmaier v Marvin Moeller | 7-5,6-0 |
| Challenger Braunschweig | 2021/07/08 13:00 | Marvin Moeller v Benjamin Hassan | 6-4,6-2 |
| 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 |