Surely you're aware that UZR for first basemen is a joke. Surely you're aware that Thome suffered a season ending injury in his last year with the Phillies, and it was widely known that they were forced to trade him to the AL due to his inability to play the position. Surely you're aware that he's played 4 games at the position since leaving Philadelphia (including zero games played at the position when he was traded to an NL team) instead giving backup starts to Ross Gload, Darin Erstad, Rob Mackowiak, a hated Nick Swisher, Brendan Harris, Jose Morales, Mark Kotsay, Josh Fields, a terrible Wilson Betemit, and Luke Hughes. If you think Thome's career would have been over after 2005 if not for the DH, well then I'll just chuckle and move on. If you don't think that, then I'll repeat what I said earlier -- speculating about how much, and how well he would have played at 1B is pointless. The larger point remains, though -- as long as baseball uses a DH, then you can't demerit guys that play there.