- KC Joyner, NFL Insider
In attempting to implement a turnaround for a defense that allowed the third most points and fourth most yards in the league last season, Arizona head coach Ken Whisenhunt may have borrowed a page from Bill Walsh's defense-building playbook. And in the process, he may have reshaped a porous defensive unit into an elite one almost overnight.
KC Joyner analyzes the impact top-rated rookie cornerback Patrick Peterson can have on the Arizona Cardinals' defense. In short, expect him to pay immediate dividends, helping turn the Cards secondary into an elite unit and -- with any kind of QB upgrade -- a strong contender for the NFC West title.