Who knows about any of this, of course but Mauer's experience post concussion is looking eerily similar to Morneau's. When you think of the micro second timing involved with recognizing and hitting a pitch, it is quite possible there are concussion effects that they player can't even recognize. I hope this is the case with Joe - sure seemed like it with Justin. I will say that the shifts have effected him. Its crazy how many balls he hits to a very small area in left field, where everyone happens to be standing now. The other factor I noticed, and line up to call me a homer, etc. is the strike zone. Without looking it up, it seemed like he took far more called strikes than I remember, some of which were horrible. I know there is a new crop of younger umpires in the league and I am wondering if that has something to do with it. He relies on his eye so much more than most players.