Pitcher Pitcher In baseball, the pitcher is the player who throws the baseball from the pitcher's mound toward the catcher to begin each play, with the goal of retiring a batter, who attempts to either make contact with the pitched ball or draw a walk. In the numbering system used to record defensive plays, the pitcher is assigned the number 1. The pitcher is often considered the most important player on the defensive side of the game, and as such is situated at the right end of the defensive spectrum. There are many different types of pitchers, such as the starting
Ground ball/fly ball ratio Ground ball/fly ball ratio In baseball statistics, ground ball-fly ball ratio (denoted by G/F or GB/FB) is a measure of: The related statistic of ground outs-fly outs ratio (denoted by GO/AO), is a measure of: A statistic in baseball that compares the number of "ground outs" (ground ball hits that lead to an out for the batter) to "air outs" (fly balls that lead to an out for the batter), which determines the mix of fielded out types for both batters and pitchers. For each ground out (GO) and air out (AO), both the batter put out and the pitcher