Bush did not practice all week because of an ankle injury and had been listed as questionable for Sunday. Pettigrew was limited in practice Friday with a foot injury but had been listed as probable. Joique Bell started for Bush, Eric Ebron for Pettigrew.
Defensive tackle Ed Stinson already had been declared out for Arizona with a toe injury.
AP NFL website: www.pro32.ap.org and www.twitter.com/AP-NFL