I find it funny that whenever he's doing poorly, people say his head's not in it or something. I would wager a significant sum of money that it's either a) he's in a short slump, as happens to every player multiple times per season, or b) his neck is still bothering him and in turn impacting his ability to swing the bat. Sometimes guys just don't play well. There doesn't always have to be a reason (despite the fact I gave a possible reason).