• Strikeouts = Shoulder Injuries?
Lindsay Berra discussed the increased risk of a shoulder injury to Ohtani because he hits.
As a left-handed hitter, Ohtani’s pitching arm, his right, is his front shoulder when he is at the plate. In recent memory, we’ve seen several players battle injuries to their lead shoulder — Aaron Judge and Michael Brantley included.
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When a batter makes contact, the counterforce from hitting the ball activates the stabilizing muscles around the shoulder. If he misses, the lack of counterforce means that all the forces generated by the swing are absorbed by the shoulder. And as Ohtani adjusts to Major League pitching, it is likely he will swing and miss more than he did in Japan.
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“Imagine a left-hander swinging out of his shoes and missing,” says Eric Cressey of Cressey Performance in Hudson, Mass. “The right arm continues to come back, and when the arm goes into external rotation or horizontal abduction, the ball tends to fly forward in the socket, which can irritate the front of the shoulder and cause anterior shoulder instability.”
Ohtani will put slightly less stress on his front shoulder, because he has a two-handed finish — at least at the moment — but there will be stress on his pitching shoulder nonetheless.
First, go read the whole article or at least this section. I listed just some highlights but there are more details on hitter shoulder injuries in the full reading.
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