Baseball’s home run dependency ratio

During the recent baseball playoffs I became interested in how important home runs are to the success of baseball teams. I wondered, what fraction of runs scored in baseball are the result of home runs?

I was able to find a dataset from retrosheet.org that allowed me to calculate what I call the home run dependency ratio, or HRR.

Here are the HRR stats for the 2010 through 2021 MLB seasons by team:

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