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earned run average

[ urnd ruhn av-er-ij, av-rij ]

noun

, Baseball.
  1. a measure of the effectiveness of a pitcher, calculated by dividing the number of earned runs scored against the pitcher by the number of innings pitched and multiplying the result by nine: : ERA

    His earned run average is currently a worrisome 6.21, as he has pitched 42 innings and given up 29 earned runs.



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Word History and Origins

Origin of earned run average1

First recorded in 1945–50

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earned runearner