Diva-K thinks he has a different (better?) anatomy than U.S born (and Latin born too I guess) players. Why don't the other guys, on the training regimen have the same weak shoulders that Diva-K does?
His success last year had something to do with lots of run support and a bullpen that was overworked in his starts since he rarely made it out of the 6th inning because he refused to pitch aggressively. The goal is to get guys out, lots of guys, so your team can have a chance to win. As a premiere starter, he should be going 6+ (at least) every time out.
Diva-K, not the Red Sox' program, created his shoulder weakness.