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earned run average
[ urnd ruhn av-er-ij, av-rij ]
noun
, Baseball.
- 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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