Elements of ERA

Keep eye on factors that constitute the earned run average statistic

Updated: March 8, 2013, 4:33 PM ET
By Tristan H. Cockcroft | ESPN.com

Ask the average person to measure a pitcher's skill with a singular statistic. How many would spit his earned run average, or ERA, back at you?

Even in today's numbers-heavy game, long-standing measures such as ERA remain in the forefront of many people's minds; familiarity exercises much influence.

Here's the problem: ERA might be an accurate measure of what has transpired during a specific, past period of time -- most frequently a single season -- but it is one ...

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