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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 compiling statistics .
In baseball statistics, strikeouts per nine innings pitched (abbreviated K/9, SO/9, or SO/9IP) is the mean of strikeouts (or Ks) by a pitcher per nine innings pitched. It is determined by multiplying the number of strikeouts by nine, and dividing by the number of innings pitched.
In baseball statistics, slugging percentage (SLG) is a measure of the batting productivity of a hitter. It is calculated as total bases divided by at-bats , through the following formula, where AB is the number of at-bats for a given player, and 1B , 2B , 3B , and HR are the number of singles , doubles , triples , and home runs , respectively:
Statistics such as wOBA build on this distinction using linear weights. Additionally, the components of OPS are not typically equal (league-average slugging percentages are usually 75–100 points higher than league-average on-base percentages). As a point of reference, the OPS for all of Major League Baseball in 2019 was .758. [10]
Rod Carew had a .408 BABIP in 1977, one of the best single-season BABIPs since 1945. [1]In baseball statistics, batting average on balls in play (abbreviated BABIP) is a measurement of how often batted balls result in hits, excluding home runs. [2]
All of these sources publish the method they use to calculate WAR, and all use similar basic principles to do so. [8] The version published by Baseball Prospectus is named WARP, [9] that by Baseball-Reference is named bWAR or rWAR ("r" derives from Rally or RallyMonkey, a nickname for Sean Smith, who implemented that site's version of the ...
Cy Young holds the major-league record for innings pitched with 7,356 during his career. In baseball, the statistic innings pitched (IP) is the number of innings a pitcher has completed, measured by the number of batters and baserunners that have been put out while the pitcher is on the pitching mound in a game.
Ted Williams is the all-time Major League Baseball leader in on-base percentage. In baseball statistics, on-base percentage (OBP) measures how frequently a batter reaches base. An official Major League Baseball (MLB) statistic since 1984, it is sometimes referred to as on-base average (OBA), [a] as it is rarely presented as a true percentage.