from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Baseball A measure of a pitcher's performance obtained by dividing the total of earned runs allowed by the total of innings pitched and multiplying by nine.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a statistic in baseball which equals the number of earned runs allowed per nine innings pitched.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (baseball) a measure of a pitcher's effectiveness; calculated as the average number of earned runs allowed by the pitcher for every nine innings pitched
Sorry, no etymologies found.
And the prospects for that scenario looked promising: The Phillies Game 4 starter, Joe Blanton, owned a earned run average of over eight against the Bombers.