The X-FactorsYou know about Peyton Manning, Marshawn Lynch and the other marquee players who will take the field in Super Bowl 48. But don't count out these two sleepers to make an impact on whether their teams will hoist the Lombardi Author:Peter KingPublish date:Jan 23, 2014 Latest NFL NewsEx-Bills RB Nyheim Hines Finds New Home: DetailsChargers Lose Key Free Agent to NFC North SquadPatrick Queen Picks Steelers Over Panthers + OthersHow the 49ers Will Replace Arik ArmsteadRamon Foster On Steelers Signing Russell Wilson, "It Cuts the Legs Out From Under Kenny Pickett"