For a one game playoff "series", you could basically whittle your rotation down to 1 guy and carry at least 3 extras, could you not? So if you're starting Chacin you could leave off Gio, Miley, and Anderson, and carry extras in the pen and bench. Wild card roster shouldn't be a ton different than what we got now minus guys like Nottingham and Saladino who serve no real purpose anyway. I would keep Gio, in case Chacin struggles the first two innings. Since Gio is starting today I don't see any way he is also pitching on Tuesday, so you definitely leave off any pitcher for the WC game that won't be available Tuesday. You could keep Anderson or Peralta as a backup starter for that Wild Card game.