Stadium: Court 3 Round: 26 Ground: Hardcourt indoor
| ITF M15 Ostrava | 2021/11/24 12:30 | Dembek, Michal v Petr Nouza | 3-6,7-6,6-1 |
| ITF M15 Opava | 2021/11/17 09:00 | Paulson, Andrew v Dembek, Michal | 6-3,7-5 |
| ITF M25 Nur-Sultan | 2021/10/29 05:00 | Dembek, Michal v Bogdan Bobrov | 6-2,3-6,2-6 |
| ITF M25 Nur-Sultan | 2021/10/28 04:55 | Denis Yevseyev v Dembek, Michal | 4-6,4-6 |
| ITF M25 Nur-Sultan | 2021/10/27 05:00 | Dembek, Michal v Ibragimov, Daniel | 7-5,6-4 |
| ITF M25 Nur-Sultan | 2021/10/20 06:35 | Dembek, Michal v Denis Yevseyev | 4-6,4-6 |
| ITF M25 Falun | 2021/09/27 12:00 | Dembek, Michal v Yusuke Takahashi | 6-7,6-2,3-6 |
| ITF M25 Jonkoping | 2021/09/21 08:55 | Oscar Moraing v Dembek, Michal | 6-4,6-4 |
| ITF M15 Ostrava | 2021/11/23 10:15 | Lukas Pokorny v Filip Duda | 6-4,6-7,3-6 |
| ITF M15 Opava | 2021/11/18 09:00 | Filip Duda v Henri Squire | 6-7,5-7 |
| ITF M15 Opava | 2021/11/17 12:10 | Jiri Barnat v Filip Duda | 6-3,3-6,2-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/13 11:30 | Filip Duda v Hansen, Christian | 6-2,2-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/12 11:30 | Filip Duda v Tom Gentzsch | 6-4,5-2 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 08:30 | Verstegen, Quin v Filip Duda | 6-2,3-6,5-4 |
| ITF M25 Prague | 2021/10/07 11:35 | Filip Duda v Fayziev, Sanjar | 3-6,1-6 |
| ITF M25 Prague | 2021/10/05 08:00 | Filip Duda v Daniel Siniakov | 6-1,6-4 |