earned run average definition

  • noun:
    • Baseball A measure of a pitcher's performance obtained by dividing the sum total of received works permitted by the total of innings pitched and multiplying by nine.
    • a statistic in baseball which equals the sheer number of earned works permitted per nine innings pitched.
    • (baseball) a measure of a pitcher's effectiveness; determined as the typical number of obtained works allowed because of the pitcher for virtually any nine innings pitched

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