Originally Posted by blandman
Okay, it's the increased health risk. You don't have to agree with it, but it's the opinion of every sports medicine professional that the motion Sale uses causes extreme stress on his elbow and back that other players do not face. Don't say "show me that", it's common knowledge that's been repeated by everyone from team execs to scouts to analysts to even agents who try to alter the approaches of their clients.
Standing at Home Plate with your cheekbone exposed while a very hard and unforgiving ball is coming at you at 95 MPH is very risky. Potentially fatal, in fact.