Video: How to Calculate an Earned Run Average

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A baseball player's earned run average, or ERA, is calculated by dividing earned runs by innings pitched. Calculate a baseball earned run average with tips from a swing mechanics analyst and hitting coach in this free video on baseball statistics and tips.

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Video Transcript

My name is Jamie Cevallas. I'm going to be discussing earned run average as a statistic and why it is so valuable. It is so valuable because it is the best way that we have to determine a pitcher's worth on paper. And the way that you calculate earned run averages is pretty simple. It's just your total earned runs which would not include the runs that are caused by errors made in the field. Only the runs that you have given up through hits or walks or hit by pitches. Divide that number, your earned runs divided by your innings pitched. Ok so your innings pitched if that is lets say five innings and two thirds ok, another words you got five innings and then two outs ok that total number will be five point six. Divide that into earned runs multiply that whole thing by nine and that's your era. Ok so a good era would be an excellent era would be in the one's or two's so one point seven nine is excellent. Another words it's basically you are giving up one point seven nine runs, per nine innings. And that's really what era is. So if a pitcher has a two point five era that's excellent as well, that's two point five runs on average he gives up per nine innings. My name is Jamie Cevallas and this is earned run average.

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How to Calculate an Earned Run Average

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