You can bring up Treinan for a spot start or bullpen by committee thing or use the off days to spread everyone out to give skip a Fister start ... I don't want to skip Stras or Gio - both need to pitch on their regular rest/routine
I just pulled up the schedule.
Day off tomorrow, Fister just threw.
Next six days:
Zimm
Stras
Roark
Gio
Fister
Zimm
Then a day off...realistic to rest Stras if that is what you are going for, but, not Fister.
Then 17 in a row put the day off on Gio's day. Potentially you could push Gio back a day and rest Fister. But I don't see any reason to do anything like that except to reset your postseason rotation.
F.P. is right about Felix. Seattle bumped him to make him the guy for a 1 game playoff. They are fighting for nothing more than the W.C. because they are third in the best division in baseball. That one game is everything.