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 still be considered and given a 7–10 split award (if performed in certified play). There are generally two primary styles of rolling the ball down the lane. Most newer players play by rolling the ball straight, hopefully into the 1–3 pocket for right-handed bowlers or the 1–2 pocket for left-handed bowlers. More experienced bowlers usually roll a hook, which means that they make the ball start out straight and then curve towards the pocket. There are two ways to produce a hook. In the first, the player lets go of the ball with his thumb first, then the middle and