Mirka Federer was a player of a ball sport.
Miroslava `` Mirka '' Federer ( born Miroslava Vavrincová on 1 April 1978 , later Miroslava Vavrinec ) is a Slovak-born Swiss former professional tennis player . Tennis . The object of the game is to play the ball in such a way that the opponent is not able to play a valid return .