Ground ball fly ball ratio
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In baseball statistics
Baseball statistics
Statistics play an important role in summarizing baseball performance and evaluating players in the sport.Since the flow of a baseball game has natural breaks to it, and normally players act individually rather than performing in clusters, the sport lends itself to easy record-keeping and statistics...

, ground ball fly ball ratio (denoted by G/F), also known as ground outs per fly outs/air outs (denoted by GO/AO), is a measure of:
  • how frequently a pitcher
    Pitcher
    In baseball, the pitcher is the player who throwsthe 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...

     gets batters out on ground balls versus fly balls; calculated as: (ground outs) /
    Division (mathematics)
    right|thumb|200px|20 \div 4=5In mathematics, especially in elementary arithmetic, division is an arithmetic operation.Specifically, if c times b equals a, written:c \times b = a\,...

     (fly outs).
  • how frequently a batter
    At bat
    In baseball, an at bat or time at bat is used to calculate certain statistics, including batting average, on base percentage, and slugging percentage. It is a more restricted definition of a plate appearance...

    grounds out versus flies out; calculated as: (number of ground outs) / (number of fly outs).
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