The Sports: (Paddleball Sports )

Paddleball was created at the University of Michigan in 1930 by Earl Riskey, a Physical Education instructor in that university. It is played in one of two versions: 1-wall paddleball and 4-wall (indoor) paddleball. The latter is similar to a racquetball court. Game is played with a rimless paddle and a ball slightly smaller than a tennis ball. Paddleball may by played by two players (singles) or four players (doubles). The object is to win the rally by serving or returning the ball so the opponent is unable to return the ball to the front wall before it touches the floor twice. Points are scored only by the serving side when it serves an ace or wins a rally. Paddleball Sports.

In 1937, the Fli-Back Company was founded in High Point, North Carolina with the paddle-ball as their sole product. (wikipedia)