Heck, if someone can put Turner or Vielma in that list, I should be able to put Mientkiewicz. Still in contract with the Twins like the 2 above, still the best defensive first baseman among people under contract with the Twins and likely will hit better than both Turner and Vielma No. Mauer is not average as far as first basemen are concerned, by any metric out there and by the eye test. He is fine in not making any errors, but his range, speed and foot work in the position are way below average. I have not seen Park play, and I have not seen Vargas play this winter, so I cannot talk much about those 2. Vargas was close to Mauer last season (at least he has more range in the position and better instincts) . I'd take Rodriguez over Mauer as far as defense goes for sure, Haar maybe, Hicks not,( I'd take Mientkiewicz over anyone named Vavra, sue me), Diaz no, Minier maybe, Kendrick no. Kepler maybe. Plouffe yes. So Mauer is not the best defensive first baseman in the organization...