The statistic reporting the number of runs that were recorded without the benefit of an error(noun)
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Use "earned runs" in a sentence
"Fifth starter Sergio Mitre allowed three earned runs over 5-2/3 innings, Alfredo Aceves, Phil Coke and Mariano Rivera slammed the door on the Orioles with 3-1/3 innings of scoreless relief, and second baseman Robinson Cano drove in four runs in a methodical 6-4 win."
"His 2,700th career hit was the first of five homers and eight earned runs the Red Sox ace allowed through eight innings."
"Associated Press Jonathon Niese, center, waits to be pulled from Sunday's game during the fifth inning after allowing four earned runs in the Mets' loss."