New York Giants running back David Wilson (22) flips while celebrating a touchdown during the first half of an NFL football game against the Philadelphia Eagles, Sunday, Dec. 30, 2012, in East Rutherford, N.J. (AP Photo/Kathy Willens)

Carolina Panthers quarterback Cam Newton (1) dives into the end zone for a touchdown as Atlanta Falcons' Chris Owens (21) pursues during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 9, 2012. (AP Photo/Rainier Ehrhardt)

Indianapolis Colts running back Vick Ballard (33) dives into the end zone for a touchdown as Tennessee Titans free safety Michael Griffin, right, defends during overtime of an NFL football game, Sunday, Oct. 28, 2012, in Nashville, Tenn. The Colts won 19-13. (AP Photo/Joe Howell)

Miami Dolphins running back Reggie Bush (22) is upended during the second half of an NFL football game against the St. Louis Rams, Sunday, Oct. 14, 2012, in Miami. The Dolphins defeated the Rams 17-14. At left is St. Louis Rams strong safety Craig Dahl (43).(AP Photo/Rhona Wise)

Oct 7, 2012; East Rutherford, NJ, USA; New York Giants running back David Wilson (22) celebrates forth quarter touchdown against the Cleveland Browns at MetLife Stadium. New York Giants defeat the Cleveland Browns 41-27. Mandatory Credit: Jim O'Connor-US PRESSWIRE

San Diego Chargers running back Jackie Battle leaps in for a touchdown against the Tennessee Titans during the second half of an NFL football game Sunday, Sept. 16, 2012, in San Diego. (AP Photo/Lenny Ignelzi )

Cleveland Browns running back Trent Richardson (33) flips into the end zone for a touchdown during an NFL football game against the Cincinnati Bengals, Sunday, Sept. 16, 2012, in Cincinnati. (AP Photo/Tom Uhlman)

Buffalo Bills quarterback Ryan Fitzpatrick is upended against the New England Patriots during the second half of an NFL football game in Orchard Park, N.Y., Sunday, Sept. 30, 2012. The Patriots won 52-28. (AP Photo/Gary Wiepert)

Pittsburgh Steelers wide receiver Antonio Brown (84), left, flips into the end zone over Indianapolis Colts defensive back Antoine Bethea (41) for a touchdown in the first quarter of an NFL football preseason game on Sunday, Aug. 19, 2012 in Pittsburgh. (AP Photo/Don Wright)

New England Patriots defensive back Marquice Cole upends Philadelphia Eagles running back Bryce Brown, top, during the third quarter of an NFL preseason football game in Foxborough, Mass., Monday, Aug. 20, 2012.(AP Photo/Steven Senne)

Kansas City Chiefs linebacker Jovan Belcher leaps in the air to apply pressure on Arizona Cardinals quarterback John Skelton during the NFL preseason week 1 football game on Friday, August 10, 2012 in Kansas City, Missouri. The Chiefs won the game 27-17. (AP Photo/G. Newman Lowrance)

Detroit Lions wide receiver Titus Young (16) leaps into the end zone for a touchdown during the first half of an NFL preseason football game against Baltimore Ravens in Baltimore, Friday, Aug. 17, 2012. (AP Photo/Patrick Semansky)

Tampa Bay Buccaneers tight end Drake Dunsmore (81) is upended by Tennessee Titans defensive back Ryan Mouton (29) after a reception during the fourth quarter of an NFL preseason football game Friday, Aug. 17, 2012, in Tampa, Fla. (AP Photo/Chris O'Meara)

St. Louis Rams cornerback Janoris Jenkins leaps into the end zone after intercepting a pass and returning it 76-yards for a touchdown during the third quarter of a preseason NFL football game against the Baltimore Ravens Thursday, Aug. 30, 2012, in St. Louis. (AP Photo/Tom Gannam)

Chicago Bears wide receiver Devin Hester (23) flips in the end zone after returning a punt 69 yards for a touchdown against the Carolina Panthers in the first half of an NFL football game in Chicago, Sunday, Oct. 2, 2011. (AP Photo/Nam Y. Huh)

Chicago Bears running back Marion Barber does a back flip in the end zone after scoring on a 3-yard run against the Carolina Panthers in the second half of an NFL football game in Chicago, Sunday, Oct. 2, 2011. The Bears won 34-29. (AP Photo/Charles Rex Arbogast)

Carolina Panthers' Cam Newton (1) is upended by Minnesota Vikings' Husain Abdullah (39) during the fourth quarter of the Vikings' 24-21 win in an NFL football game in Charlotte, N.C., Sunday, Oct. 30, 2011. (AP Photo/Chuck Burton)

Tampa Bay Buccaneers' Kellen Winslow tries to leap over Green Bay Packers' Desmond Bishop (55) during the second half of an NFL football game Sunday, Nov. 20, 2011, in Green Bay, Wis. The Packers won 35-26. (AP Photo/Jeffrey Phelps)

Pittsburgh Steelers receiver Hines Ward (86) is upended by Tennessee Titans safety Michael Griffin and lands in the endzone for a touchdown during the third quarter of an NFL football game in Pittsburgh, Sunday, Oct. 9, 2011. (AP Photo/Gene J. Puskar)

Baltimore Ravens cornerback Lardarius Webb (21) dives into the end zone on a 68 yard fourth quarter punt return for a touchdown that gives the Ravens a 24-3 lead during the NFL week 13 football game against the Cleveland Browns on Sunday, December 4, 2011 in Cleveland, Ohio. The Ravens won the game 24-10. (AP Photo/Paul Spinelli)

Cincinnati Bengals wide receiver Jerome Simpson (89) flips over Arizona Cardinals linebacker Daryl Washington (58) for a touchdown in the first half of an NFL football game, Saturday, Dec. 24, 2011, in Cincinnati. (AP Photo/Darron Cummings)