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Baseball statistics include a variety of metrics used to evaluate player and team performance in the sport of baseball. Because the flow of a baseball game has natural breaks to it, and player activity is characteristically distinguishable individually, the sport lends itself to easy record-keeping and thus both compiling and compiling statistics .
Traditional-style baseball scorecard. Baseball scorekeeping is the practice of recording the details of a baseball game as it unfolds. Professional baseball leagues hire official scorers to keep an official record of each game (from which a box score can be generated), but many fans keep score as well for their own enjoyment. [1]
Batting Park Factor, also simply called Park Factor or BPF, is a baseball statistic that indicates the difference between runs scored in a team's home and road games. Most commonly used as a metric in the sabermetric community, it has found more general usage in recent years.
In Major League Baseball (MLB), .300 is considered an average BABIP. [2] Various factors can impact BABIP, such as a player's home ballpark; [3] for batters, being speedy enough to reach base on infield hits; [3] or, for pitchers, the quality of their team's defense. [4]
In baseball, batting average (BA) is determined by dividing a player's hits by their total at-bats. It is usually rounded to three decimal places and read without the decimal: A player with a batting average of .300 is "batting three hundred". If necessary to break ties, batting averages could be taken beyond the .001 measurement.
In baseball, defense—that is, preventing the opponent from scoring runs—is the joint responsibility of the pitcher and the fielders. ERA attempts to adjust for some of the influence of the fielders on a pitcher's runs allowed by removing runs that are scored because of fielding errors —that is, unearned runs.
Total player rating is computed using linear weights, in which each event in a baseball game (for instance, a base on balls, a double or a stolen base) is assigned a value in runs. Each player then has a rating in Batting Runs, Pitching Runs, and Fielding Runs, usually adjusted for park and position, and the sum of these values is divided by 10 ...
In baseball statistics, earned run average (ERA) is the average of earned runs allowed by a pitcher per nine innings pitched (i.e. the traditional length of a game). It is determined by dividing the number of earned runs allowed by the number of innings pitched and multiplying by nine. Thus, a lower ERA is better.