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General managers and baseball scouts have long used the major statistics, among other factors and opinions, to understand player value. Managers, catchers and pitchers use the statistics of batters of opposing teams to develop pitching strategies and set defensive positioning on the field. Managers and batters study opposing pitcher performance ...
In modern baseball, sabermetrics uses several defense independent pitching statistics (DIPS) including a Defense-Independent ERA in an attempt to measure a pitcher's ability regardless of factors outside his control. Furthermore, because of the dependence of ERA on factors over which a pitcher has little control, forecasting future ERAs on the ...
In sabermetrics, "ball in play" and "batting average on balls in play" (BABIP) have specific technical definitions that are used to determine pitchers' ability independently of the fielding defense of a team. In this definition, a home run is not a ball in play. See Defense Independent Pitching Statistics. Also see in play.
In baseball statistics, pitch count is the number of pitches thrown by a pitcher in a game. Pitch counts are especially a concern for young pitchers, pitchers recovering from injury, or pitchers who have a history of injuries. The pitcher wants to keep the pitch count low to maintain their stamina.
Both total runs and earned runs are tabulated as part of a pitcher's statistics, but earned runs are specially denoted because of their use in calculating a pitcher's earned run average (ERA), the number of earned runs allowed by the pitcher per nine innings pitched (i.e., averaged over a regulation game). Thus, in effect, the pitcher is held ...
In baseball statistics, walks plus hits per inning pitched (WHIP) is a sabermetric measurement of the number of baserunners a pitcher has allowed per inning pitched.WHIP is calculated by adding the number of walks and hits allowed and dividing this sum by the number of innings pitched.
In baseball, the pitcher is the player who throws ("pitches") 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.
James has noted that there are cases in which his original version of game score does not accurately reflect a pitcher's performance. [3]In a September 2003 article in Baseball Prospectus, Dayn Perry created an updated formula based on the ideas behind defense-independent pitching statistics, named Game Score 2.0.