If you need a start from Jonathan Sanchez, have him throw three innings tonight... Romo throws 2, Casilla throws 1, Mota throws 1, Ramirez throws 1 and Affeldt throws 1. Each of those pitchers is rested.
And if the Giants lose, they have an off day to rest the arms and have Lincecum throwing Game 6 and Cain Game 7 at home against Wilson and Lewis. Advantage Giants in both games.
I guess what I am saying is, if you HAVE to throw Sanchez, do it when you have two games (and two aces) to spare.
It's not going to happen. But it's worth saying it NOW instead of a second guess.