The Twins will have a decision to make when 2nd baseman/shortstop Tsuyoshi Nishioka returns from a broken leg.  Nishioka is close and could be back within a couple of weeks.  When that happens the Twins have to decide if Nishioka is a 2nd baseman or shortstop and if Plouffe stays or Casilla stays.  Based on the offense the Twins are getting from Plouffe and Nishioka's arm strength issues I think Plouffe is the shortstop, Nishioka is the 2nd baseman and Matt Tolbert stays as the utility infielder.  Alexi Casilla has no minor league options left so he would then be exposed to waivers before the Twins could send him to triple-A.  Watch the production of Plouffe and Casilla closely over the next couple of weeks to see if this happens.