Five questions: Cardinals keys for NFC title defense

FLAGSTAFF, Ariz. -- Five questions to ponder as the Arizona Cardinals -- yes, the Cardinals -- prepare to open defense of their NFC championship at serene Northern Arizona University:   1. Can they keep their focus? Maybe it's a new day under Ken Whisenhunt, but it's worth noting that the Cardinals haven't had back-to-back winning seasons in 25 years. And so you have a whole bunch of players who have fought through failure but never had to manage success. Now, they will. Expectations have risen, and not just from the general public.   "If we don't make the playoffs, it's a waste of a season," receiver Larry Fitzgerald told Sporting News. "Our goal is to win our division, and that's what we're out here working so hard for, putting ourselves in position to do that."   2. What difference will Bill Davis make? The Pittsburgh-ization of the Cardinals continues with the promotion of linebackers coach Bill Davis -- ...