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I must say when I saw that statistic last night it was the first time I had heard of it. But the way I understand it, and umpire's ERA stands for the number of earned runs scored in a game while the umpire is behind home plate. A higher umpire ERA generally means that the umpire favors the hitter by having a smaller strike zone. A lower umpire ERA generally means the umpire favors the pitcher by having a larger strike zone.

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โˆ™ 2007-10-17 17:50:25
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Q: What does a baseball umpire's era mean?
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