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"AA" is also the abbreviation for the American Association, which has been the name of numerous professional baseball leagues: a short-lived major league of the 19th century, a minor league for much of the 20th century, and an independent minor league that became a "Partner League" of Major League Baseball in 2021.
For pitchers, wins, ERA, and strikeouts are the most often-cited statistics, and a pitcher leading his league in these statistics may also be referred to as a "triple crown" winner. General managers and baseball scouts have long used the major statistics, among other factors and opinions, to understand player value.
In baseball, a quality start (QS) is a statistic for a starting pitcher defined as a game in which the pitcher completes at least six innings and permits no more than three earned runs. The quality start was developed by sportswriter John Lowe in 1985 while writing for The Philadelphia Inquirer . [ 1 ]
In baseball statistics, batting average against (denoted by BAA or AVG), also known as opponents' batting average (denoted by OBA), [a] is a statistic that measures a pitcher's ability to prevent hits during official at bats. It can alternatively be described as the league's hitters' combined batting average against the pitcher.
The lowest career ERA is 1.82, set by Chicago White Sox pitcher Ed Walsh. 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 ...
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 Major League Baseball, the winning pitcher is defined as the pitcher who last pitched prior to the half-inning when his team maintains the lead that it never relinquishes. There are two exceptions to this rule. The first is that a starting pitcher must complete a minimum of five innings, the length of an official game, to earn a win. Failure ...
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.