I don't know if i'd compare Hamels to Lincecum, I think Hamels uses more arm. He's had bouts of arm injuries through his short career. As young as he is, he already needs his beauty rest to function properly. That made for good jokes between friends last year, but in all seriousness, it got to the point where if he really needed the rest then so be it. Obviously it paid off.
It looks like he use a bunch of arm, because he so damn tall and lanky. I think that is where is injuries come from, he just doesn't have the body mass to support the way he bring the ball across his chest. I think he uses less arm than you think.
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