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en.wikipedia.org/wiki/Earned_run_average

In baseball statistics, earned run average (ERA) is the mean of earned runs given up by a pitcher per nine innings pitched It is determined by dividing the ...

m.mlb.com/glossary/standard-stats/earned-run-average

It's also hard to evaluate ERA across the two leagues in Major League Baseball, because the absence of a designated hitter in the National League tends to ...

www.sportingcharts.com/dictionary/mlb/earned-run-average-era.aspx

Earned Run Average - ERA - This baseball statistic represents theamount of earned runs, on average, that a pitcher allows for everynine innings he or she ...

www.homerunweb.com/era.html

How to Calculate Earned Run Average (ERA) As the basic statistical measure of a pitcher, ERA determines the average number of earned runs scored against a ...

www.lootmeister.com/mlb/good-bad-era.php

Examples of what constitues both good and bad earned run average for Major League Baseball pitchers.

www.livestrong.com/article/399077-what-does-era-mean-in-baseball

Mar 8, 2011 ... ERA in baseballs stands for “earned run average.” It is used to measure a pitcher's performance and was originally created during the...

www.freemathhelp.com/earned-run-average.html

Earned Run Average represents the number of earned runs a pitcher will give up per nine-inning game. This quick lesson will show you how to calculate ERA ...

www.miniwebtool.com/era-calculator

About This Tool. The online ERA Calculator is used to calculate the ERA (earned run average) used in baseball statistics.

www.beyondtheboxscore.com/2012/9/14/3332194/era-plus-vs-era-minus

Sep 14, 2012 ... I was pulling stats from both Baseball-Reference and FanGraphs, and noticed that Scott Diamond's ERA+ was 117, and his ERA- was 86.

www.baseball-reference.com/bullpen/Earned_run_average

Jul 20, 2011 ... A pitcher's Earned Run Average (aka ERA) is a primary measure of his success. It is expressed as an average number of opponents' earned ...