Yates, but must find a way to replace arguably the most explosive receiving corps in the conference, which featured first round pick Hakeem Nicks and Brandon Tate. The backfield could be explosive though. The only other real possible obstacle for North Carolina is ironically the health of Yates, who missed time last season with a broken ankle, and even suffered a thumb injury catching a Frisbee in the spring."As a freshman, I thought he was the greatest quarterback ever," Willis said. "That was the best season I'd ever had in football. To see the things that he's done, he's won a Super Bowl.

The offensive line is aging and needs replenishing, but Brian Waters and Casey Wiegmann can still perform on a high level. Jared Allen and Tambi Hali are great pass rushers off the edge. The Chiefs could use an inside presence on the defensive line.The updated figures come from The March of Dimes, a nonprofit group that works to improve the health of mothers and babies,