Unless Leyland gives him another day off, Verlander is scheduled to pitch Sunday afternoon in Oakland. I doubt Leyland will change the rotation because Verlander is currently on schedule to pitch the opening game in the playoffs...and he certainly doesn't neet to pitch in the final home series against the Indians.
The only questions (in my mind) are if Fister will be moved to the #2 slot behind Verlander (in which case they may need to have Cone start in the rotation) or go with Scherzer in the #2 slot. To be honest, I would rather keep Max sandwiched between Verlander and Fister because Scherzer and Porcello have not been consistent this year and I don't think we can afford to back-to-back poor pitching performances. Also, does Penny get dumped into bullpen purgatory for the playoffs? I say YES and Leyland has no choice if he hopes to make it back to the World Series.