Who will be out of the Nats’ rotation? : The Nationals’ acquisition of Gio Gonzalez gives them six major-league pitchers vying for five spots in the 2012 rotation. Gonzalez joins a crew of starters that includes Jordan Zimmermann , Stephen Strasburg , John Lannan , Ross Detwiler , and veteran Chien-Ming Wang , who is returning to Washington on a one-year contract. In a conference call on Friday, Nationals’ GM Mike Rizzo implied that the rotation jobs of Gonzalez, Zimmermann, and Strasburg are safe; according to Rizzo, it is “fair to say” that Lannan, Wang or Detwiler will end up in the bullpen at the beginning of next season. Purely speculation, but Lannan and particularly Detwiler could net some value if the Nats decide to go that route. Anyway, the point is that either by a move to the bullpen, a demotion, or a trade, there’s going to be an odd man out somehow. But which one should go? First, ponder some splits for all three pitchers. Throughout their careers, all three are simi...