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 scores decline, often because they did not change their technique or bowling balls appropriately. Some argue that such high technology unfairly affects competition, making high scores too dependent on how much money one spends on equipment. The USBC, for various reasons, has struggled to regulate these changes well enough to protect the integrity of their honor score award program. The problem mostly stemmed from the feature of modern oil patterns, especially house patterns that help exhibit performance of modern bowling balls allegedly for marketing reasons. Every such pattern provides better odds to bowlers with certain line of bowling, release, ball