Video: Will Ravens repeat as champs?

ESPN's Chris Mortensen, Mel Kiper Jr. and Trent Dilfer discuss the Baltimore Ravens' chances of repeating as Super Bowl champions.

It's quite a challenge when you look at recent history. Of the previous four defending Super Bowl champions, none won a playoff game and two (2009 Steelers and 2012 Giants) didn't even make the playoffs.

Since 2009, just one defending champ, the 2011 Packers, won their division. But Green Bay lost its first playoff game, a divisional round game to the Giants.