Young guys with arm problems will regret it later in life if they don't last long enough to make the big bucks I have/had a small rotator cuff tear several months ago and couldn't even lift my arm. The pain and weakness was intense. Its finally starting to heal and I cant even imagine a complete tear. Of course, I'm 65 years old, those kids seem to heal pretty quickly. The pitch clock really makes me wonder if arm fatigue causes more injuries. It seems like max effort may lead to more serious injuries.