Ten-pin bowling regulations, identification letters and numbers, and general wear from normal use. For much of the history of bowling, bowling balls were made using a three-piece construction method. Starting in the mid-1990s, however, most manufacturers switched to a two-piece method. In response to these innovative ball designs, the American Bowling Congress placed further restrictions on the technical characteristics of the ball such as the radius of gyration and hooking potential. A game of bowling consists of ten frames. In each frame, the bowler will have two chances to knock down as many pins as possible with their bowling ball. In games
Ten-pin bowling pins. Other bowlers utilize the dots if they find themselves pulling their body up at the foul line (the shoulders should stay level throughout the entire approach,) as this is usually caused by them thinking that the arrows are too far out at the lane. Advanced players often use the lane boards themselves to line up shots that require them to aim between arrows. The conventional bowling footwork styles use either a four- or five-step approach beginning 8 to 16 feet (2.4 to 4.8 meters) behind the foul line. In the typical four-step approach, the ball is pushed away from