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  2. Earned run average - Wikipedia

    en.wikipedia.org/wiki/Earned_run_average

    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 multiplying by nine. Thus, a lower ERA is better.

  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. Baseball statistics - Wikipedia

    en.wikipedia.org/wiki/Baseball_statistics

    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.

  6. 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.

  7. Sabermetrics - Wikipedia

    en.wikipedia.org/wiki/Sabermetrics

    The traditional measure of pitching performance is the earned run average (ERA). It is calculated as earned runs allowed per nine innings. Earned run average does not separate the ability of the pitcher from the abilities of the fielders that he plays with. [16] Another classic measure for pitching is a pitcher's winning percentage. Winning ...

  8. How long does it take the average person to run a marathon ...

    www.aol.com/news/long-does-average-runner...

    A marathon is always measured by the same distance: 26.2 miles, but the time it takes to finish depends on your fitness level, training and the course itself.

  9. Run average - Wikipedia

    en.wikipedia.org/wiki/Run_average

    Run average for pitchers differs from the more commonly used earned run average (ERA) by adding unearned runs to the numerator. This measure is also known as total run average (TRA) or runs allowed average. For batters, the run average is the number of runs scored per at bat. [1]