FILE - In this Feb. 4, 2007, file photo, Indianapolis Colts head coach Tony Dungy, right, hugs Chicago Bears head coach Lovie Smith at the end of the Super Bowl XLI football game at Dolphin Stadium in Miami. NFL coaching trees are such that it's rare when any game doesn't feature someone who worked for someone. Perhaps the ultimate mentor/student matchup came in the 2007 Super Bowl: Dungy vs. Lovie Smith. (AP Photo/David Duprey, File)