 A number of important footballers began their football in the blue and white of Kladno or wore it at some time during their careers.Among them were Otakar Škvain-Mazal (1894–1941), a pupil of SK Kladno and the author of three goals at the Antwerp Olympics in 1920 where the Czechoslovak national team made it to the final.František Kloz (1905–1945), Kladno's most popular player and most active goal scorer (592 goals in Kladno colours) and a Czechoslovak international player who, like his teammate, Josef Kusala, laid down his life with a gun in his hand during the liberation of his homeland in 1945.