Stadium: Grandstand 4 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Bratislava | 2021/03/10 14:40 | Stepan Pecak v Martin Krumich | 7-6,5-7,1-6 |
| ITF - M25 Pardubice | 2021/09/22 10:20 | Martin Krumich v Maciej Rajski | 7-6,3-6,6-7 |
| ITF - M15 Sozopol | 2021/09/18 07:00 | Kai Wehnelt v Martin Krumich | 6-4,6-2 |
| ITF - M15 Sozopol | 2021/09/17 06:55 | Martin Krumich v Tommaso Compagnucci | 6-2,6-4 |
| ITF - M15 Sozopol | 2021/09/16 09:35 | Martin Krumich v Konstantin Zhzhenov | 6-2,6-4 |
| ITF - M15 Sozopol | 2021/09/14 09:00 | Martin Krumich v Valentin Vanta | 7-5,7-6 |
| ITF - M25 Ricany | 2021/09/02 10:45 | Orlando Luz v Martin Krumich | 6-7,6-1,6-2 |
| ITF - M25 Ricany | 2021/09/01 09:20 | Jiri Barnat v Martin Krumich | 2-6,3-6 |
| Challenger - Praga | 2021/08/23 11:20 | Michael Geerts v Martin Krumich | 6-2,6-4 |
| ITF - M25 Budapesta | 2021/09/27 13:05 | Stepan Pecak v Martin Benes | 6-4,6-0 |
| ITF - M25 Pardubice | 2021/09/21 07:55 | Toby Martin v Stepan Pecak | 7-5,7-6 |
| ITF - M25 Pardubice | 2021/09/20 08:00 | Marcel Marlon Sudzum v Stepan Pecak | 3-6,2-6 |
| ITF - M25 Sintra | 2021/09/14 17:05 | Jack Gibbens v Stepan Pecak | 6-1,3-6,11-9 |
| ITF - M25 Sintra | 2021/09/13 15:10 | Joao Goncalves v Stepan Pecak | 1-6,2-6 |
| ITF - M15 Zilina | 2021/08/30 11:30 | Stepan Pecak v Jakub Novak | 7-6,1-6,9-11 |
| ITF - M25 Wetzlar | 2021/08/03 09:00 | Daniel Cukierman v Stepan Pecak | 6-1,6-1 |
| ITF - M25 Wetzlar | 2021/08/02 08:00 | Stepan Pecak v Loic Cloes | 6-4,4-6,10-8 |