Gary Horton picks 48 playoff 'X factors' -- four guys per team -- who, while not household names, could swing the balance of the AFC and NFC playoffs. You'll find names like Roman Harper, John Kuhn, Raheem Brock and Danny Woodhead here.
The Steelers and Buccaneers are among the strongest interior run defenses in the league, writes Steve Muench.
Which of today's young players are next in line to earn Pro Bowl invites? Pro Football Weekly polishes off its crystal ball.