I'm gonna go against what most people are saying you should do. You have to start Warner this week. Arizona's running game sucks. Shipp is injured. JJ Arrington can't get it done. Arizona can only move the ball by having Warner pass on nearly every [censored] play. Warner puts up 300 yards and 2-3 TDs against mediocre defenses in his sleep. Imagine what he'll do against SF. Any random 2+2er could QB against SF and throw for 300 yards and 2-3 TDs. With the Steelers stingy pass defense, there is a very good chance that Palmer won't put up big numbers. It's not a TERRIBLE play to start Palmer instead of Warner. But I do think it is slightly -EV.