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Fangraphs: Tommy John Surgery and Hitters


weams

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http://www.fangraphs.com/community/the-effects-of-tommy-john-surgery-on-batters/

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Honestly, the results were surprising. Like most analysts, I believed that they would be right in saying that the surgery has little to no effect on batter strength. I found this to be wrong though because, on average, most batters did experience a non-negligible decrease in BABIP, SLG, and HR/FB.

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They need to add an age column to that chart (age at the time of surgery).

I mean, if a guy has it at 32 and then doesn't do as well afterwards... how much of that is attributable to the surgery as opposed to the natural decline with age?

If a guy has it at 24 and doesn't come back the same, THAT is an indication for concern.

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