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 the first roll of a frame, and if all ten pins are knocked down on this shot, it is scored as a spare. Behind the foul line is an "approach" approximately long used to gain speed and leverage on the ball before delivering it. from the foul line, where the lane terminates, it is joined to a roughly deep by wide surface of durable and impact-resistant material called the "pin deck", upon which each rack of pins is set. The bowler is allowed 10 frames in which to knock down pins, with frames one (1) through nine (9) being composed