Definition of earned run average in English:

earned run average

Syllabification: earned run av·er·age

Entry from US English dictionary

noun

Baseball
A statistic used to measure a pitcher’s effectiveness, obtained by calculating the average number of earned runs scored against the pitcher in every nine innings pitched.

Definition of earned run average in:

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Word of the day apposite
Pronunciation: ˈapəzit
adjective
apt in the circumstances or relation to something