| ITF M25 Jablonec Nad Nisou | 2021/05/18 07:30 | Jean Thirouin v Filip Duda | 3-6,6-4,10-7 |
| ITF M25 Jablonec Nad Nisou | 2021/05/17 08:30 | Antonin Bolardt v Filip Duda | 0-6,3-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 10:00 | Krystof Zapsky v Filip Duda | 6-4,3-6,9-11 |
| ITF M25 Prague | 2021/05/11 14:15 | Thai-Son Kwiatkowski v Filip Duda | 6-3,6-1 |
| Czechia Extraliga | 2020/12/14 10:40 | Robin Stanek v Filip Duda | 7-5,6-1 |
| Czechia Extraliga | 2020/12/13 11:20 | Filip Duda v Michael Vrbensky | 4-6,3-6 |
| ITF M25 Pardubice | 2020/09/27 10:30 | Filip Duda v Pol Martin Tiffon | 2-6,4-6 |
| ITF M25 Jablonec Nad Nisou | 2020/09/21 09:15 | Johan Nikles v Filip Duda | 4-6,6-2,10-6 |
| ITF M15 Heraklion | 2021/05/17 07:00 | Milan Welte v Tom Gentzsch | 6-0,6-3 |
| ITF M15 Heraklion | 2021/05/16 06:30 | Cheraag Bajwa v Tom Gentzsch | 2-6,1-6 |
| ITF M25 Meerbusch | 2021/04/12 12:00 | Alexey Vatutin v Tom Gentzsch | 6-3,6-1 |
| ITF M25 Meerbusch | 2021/04/12 07:30 | Tom Gentzsch v Fred Olivier Schommer | 7-6,6-2 |