Regarding the OP:
YouTube - Nyjer Morgan gets hit by pitch but umpire blows the call.
I don't agree with Davidson's call on Njer Morgan. That said, it seems you don't see the Biggio/Bonds elbow armor as much anymore now that those guys retired. I think if a batter gets hit in the torso or head, he needs to do something really out of the ordinary other than just turning his shoulder in to avoid getting hit on the forearm or hand which might break a bone.