High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Racquetball is a racquet sport played with a hollow rubber ball in an indoor or outdoor court. Joe Sobek is credited with inventing racquetball in 1950, adding a stringed racquet to the game to increase velocity and control. Unlike most racquet sports, such as tennis, badminton or squash, there is no obstacle - net or tin - to hit the ball over. Also, the court's walls, floor, and ceiling are legal playing surfaces,... Mehr