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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 ...
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 ...
ERA+ is calculated as: + = Where ERA is the pitcher's ERA, lgERA is the average ERA of the league, and PF is the park factor of the pitcher in question.. This formula is now standard, [1] although Baseball-Reference.com briefly used a different formula which took values strictly between 0 and 200 instead of between 0 and infinity, but the current website shows values above 200 so it is clearly ...
During the early days of baseball history, this over correction for fielding errors caused pitchers on bad teams to be overrated in terms of ERA. [7] Removing unearned runs in calculating ERA may be useful if they are unrelated to pitcher performance, but Wright concludes that fielding errors are somewhat dependent on a pitcher's style.
In baseball, earned run average (ERA) is a statistic used to evaluate pitchers, calculated as the mean of earned runs given up by a pitcher per nine innings pitched. A pitcher is men by a baserunner who reached base while batting against that pitcher, whether by hit, base on balls or "walk", or being hit by a pitched ball; [1] an earned run can be charged after the pitcher is relieved if he ...
Traditionally, statistics such as batting average (the number of hits divided by the number of at bats) and earned run average (the average number of runs allowed by a pitcher per nine innings, less errors and other events out of the pitcher's control) have dominated attention in the statistical world of baseball.
The steroid era was a black eye for baseball on one hand, a savior on the other. High-level athletes are always going to do everything they can to get an edge, to beat the competition, and to ...
Component ERA or ERC is a baseball statistic invented by Bill James. [citation needed] It attempts to forecast a pitcher's earned run average (ERA) from the number of hits and walks allowed rather than the standard formula of average number of earned runs per nine innings. ERC allows one to take a fresh look at a pitcher's performance and gauge ...