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07-10-2011, 06:46 PM
Mike Emrick
Corsi's right
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The explanation was given on the 2nd page. The only reason I still use it is 1) I'm a dinosaur and 2) It's become so prevalent on broadcasts and mainstream web sites, and I don't want to go indie.

Three of the major components that contribute to ERA are park factors, team defense, and luck. A stat that relies heavily on the entire team is not a good metric to judge individual players. You wouldn't use total goals allowed to judge a goalie (unless you're an idiot), so why would you use ERA to judge a pitcher? It's the same thing. ERA would only be a "good" stat if the pitcher was the only factor in run prevention. He isn't, not by a longshot.

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