Ten-pin bowling over the Model A), all three versions are still in widespread use. The television age of the 1950s also helped to increase the popularity of ten-pin bowling, as images of the sport began to enter the homes of millions across the United States. Nationally televised programs like "Jackpot Bowling" and "Make That Spare" became popular on Friday nights from the late 1950s into the early 1960s. Following many years of debate over what constituted a professional bowler versus an amateur, Eddie Elias founded the Professional Bowlers Association (PBA) in 1958. The PBA's "Pro Bowlers Tour" became a permanent part of
Ten-pin bowling clockwise (for right handers) or counter clockwise (for left handers) upon release of the ball. Like a conventional release that generates hook, this technique will also cause the ball to move in a curved path rather than in a straight line. However a right handed backup will follow a left handed conventional path, and a left handed backup will follow a right handed conventional path. This style of bowling can be significantly harder to learn for new bowlers and there is increased risk of injury to the wrist, especially when heavier balls are used. However, a right handed backup bowler