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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 ... pitchers' defensive errors) are recorded as unearned runs and omitted from ERA calculations. ... Prior to 1900 – and, in fact, for many years afterward – pitchers were routinely expected to pitch a complete game, and their win-loss ...

captaincalculator.com/sports/baseball/era-calculator

Earned Run Average (ERA) is a baseball metric used put a pitcher's number of ... win/loss ratio (primarily because pitchers were expected to pitch a full game).

www.homerunweb.com/era.html

How to Calculate Earned Run Average (ERA) As the basic statistical measure ... So, for example, a pitcher with a 3.50 ERA is expected to allow three and a half ...

Examples of what constitues both good and bad earned run average for Major League Baseball pitchers. ... MLB Betting: How to Judge a Pitcher's ERA ... A closer might be expected to have a lower ERA, but for the most part, an ERA of 3.00 is ...

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.fangraphs.com/library/pitching/xfip

Expected Fielding Independent Pitching (xFIP) is a regressed version of Fielding Independent .... Better with Less: ERA Estimators – Baseball Prospectus.

www.baseballhq.com/glossary-c-k

A hitter's batting average as calculated by multiplying the percentage of balls put in play ... "xERA represents the expected ERA of the pitcher based on a normal ...