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  2. Earned run average - Wikipedia

    en.wikipedia.org/wiki/Earned_run_average

    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 ...

  3. Earned run - Wikipedia

    en.wikipedia.org/wiki/Earned_run

    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 ...

  4. Adjusted ERA+ - Wikipedia

    en.wikipedia.org/wiki/Adjusted_ERA+

    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 ...

  5. List of Major League Baseball annual ERA leaders - Wikipedia

    en.wikipedia.org/wiki/List_of_Major_League...

    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 ...

  6. List of Major League Baseball career ERA leaders - Wikipedia

    en.wikipedia.org/wiki/List_of_Major_League...

    In baseball statistics, earned run average (ERA) is the mean of earned runs given up by a pitcher per nine innings pitched (i.e., the traditional length of a game). It is calculated by dividing the number of earned runs allowed by the number of innings pitched and multiplying by nine.

  7. Component ERA - Wikipedia

    en.wikipedia.org/wiki/Component_ERA

    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 ...

  8. How the Steroid Era Saved Baseball - AOL

    www.aol.com/news/2014-01-14-we-cant-ignore-the...

    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 ...

  9. Baseball statistics - Wikipedia

    en.wikipedia.org/wiki/Baseball_statistics

    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 .