Not bad, but it really doesn't do much to isolate park and league adjustments. I really don't like using ERA as an indicator either. Team ranks for wRC+, FIP-, and UZR/150: http://i.imgur.com/5nKNdoL.png In what should be a surprise to absolutely nobody, hitting and pitching matter just about equally. You can build your ballclub around either. Edit: Oh, and for anybody wondering I went back to 2002 simply because that's as far back as we have UZR data for.