A 2015 study in the American Journal of Sports Medicine found athletes between the ages of 15 to 19 accounted for 56.8% of all Tommy John procedures.Even though the pandemic shut down spring training, professional pitchers were still throwing a lot in preparation for a shortened season amid the pandemic.Pitchers’ arms in particular are tired after throwing fastballs with full force and curve balls using a twisting arm motion to get the ball to break and spin.

Source: ABC News

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