| UTR Pro Tennis Series - Ricany | 2021/09/13 09:00 | Adam Kozler v Filip Duda | 1-6,3-6 |
| UTR Pro Tennis Series - Ricany | 2021/09/11 09:00 | Marek Jaloviec v Filip Duda | 6-4,5-0 |
| UTR Pro Tennis Series - Ricany | 2021/09/09 07:30 | Filip Duda v Yurii Dzhavakian | 7-6,3-6,5-4 |
| UTR Pro Tennis Series - Ricany | 2021/09/08 07:30 | Filip Duda v Dominik Suc | 4-6,6-2,6-2 |
| UTR Pro Tennis Series - Ricany | 2021/09/07 09:00 | Filip Duda v Stefanos Sakellaridis | 4-6,6-4,5-2 |
| UTR Pro Tennis Series - Ricany | 2021/09/06 10:00 | Filip Duda v Jan Kuncik | 6-1,5-1 |
| ITF - M25 - Ricany | 2021/09/02 07:55 | Filip Duda v Marek Gengel | 3-6,3-6 |
| ITF - M25 - Ricany | 2021/09/01 10:05 | Noel Larwig v Filip Duda | 2-6,2-6 |
| UTR Pro Tennis Series - Ricany | 2021/09/12 07:30 | Dominik Kellovsky v Krystof Zapsky | 6-1,6-1 |
| UTR Pro Tennis Series - Ricany | 2021/09/11 10:30 | Dominik Kellovsky v Stefanos Sakellaridis | 7-5,5-1 |
| UTR Pro Tennis Series - Ricany | 2021/09/09 13:40 | Dominik Kellovsky v Jiri Jenicek | 2-6,6-4,6-1 |
| UTR Pro Tennis Series - Ricany | 2021/09/08 09:00 | Dominik Kellovsky v Marcelo Zormann | 6-4,5-1 |
| UTR Pro Tennis Series - Ricany | 2021/09/07 10:30 | Dominik Kellovsky v Janos Fekete | 0-6,0-5 |
| UTR Pro Tennis Series - Ricany | 2021/09/06 07:30 | Dominik Kellovsky v Martins Podzus | 3-6,7-5,4-6 |
| ITF - M15 - Zilina | 2021/09/01 10:55 | Lukas H Lilleengen v Dominik Kellovsky | 6-4,1-6,7-6 |
| ITF - M15 - Zilina | 2021/08/31 09:30 | Dominik Kellovsky v Tomas Lanik | 6-1,6-4 |