San Francisco 49ers quarterback Colin Kaepernick (7) crosses the goal line for a touchdown as wide receiver Michael Crabtree (15) reacts in the fourth quarter of the NFL Super Bowl XLVII football game against the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Dave Martin)
Baltimore Ravens wide receiver Jacoby Jones (12) celebrates his 56-yard touchdown with quarterback Joe Flacco (5) and Kelechi Osemele (72) during the first half of the NFL Super Bowl XLVII football game against the San Francisco 49ers, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Dave Martin)
San Francisco 49ers tight end Vernon Davis (85) looks around a dark stadium after the lights went out during the second half of NFL Super Bowl XLVII football game Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
Baltimore Ravens quarterback Joe Flacco (5) passes against the San Francisco 49ers during the first half of NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Bill Haber)
** FILE ** Robert Griffin III of the Washington Redskins accepts the award for AP Offensive Rookie of the Year presented by Pepsi Max at the 2nd Annual NFL Honors on Saturday, Feb. 2, 2013, in New Orleans. (Photo by AJ Mast/Invision/AP)
The Superdome, where the NFL Super Bowl XLVII football game between the San Francisco 49ers and Baltimore Ravens will be played, is seen at sunset Friday, Feb. 1, 2013, in New Orleans. (AP Photo/Charlie Riedel)
Eli Manning of the New York Giants, left, Peyton Manning of the Denver Broncos, center, and former NFL player Archie Manning at the 2nd Annual NFL Honors on Saturday, Feb. 2, 2013 in New Orleans. (Photo by Jordan Strauss/Invision/AP)
Robert Griffin III of the Washington Redskins accepts the award for AP Offensive Rookie of the Year presented by Pepsi Max at the 2nd Annual NFL Honors on Saturday, Feb. 2, 2013 in New Orleans. (Photo by AJ Mast/Invision/AP)
Robert Griffin III of the Washington Redskins accepts the award for AP Offensive Rookie of the Year presented by Pepsi Max at the 2nd Annual NFL Honors on Saturday, Feb. 2, 2013 in New Orleans. (Photo by AJ Mast/Invision/AP)
FILE - In this file photo, Minnesota Vikings running back Adrian Peterson (28) moves the ball during the first half of an NFL football game against the Green Bay Packers in Green Bay, Wis. Peterson has won The Associated Press 2012 NFL Offensive Player of the Year award just one year after major knee surgery. (AP Photo/Morry Gash, File)
NFL Commissioner Roger Goodell answers questions during an NFL Super Bowl XLVII football game news conference at the New Orleans Convention Center, Friday, Feb. 1, 2013. in New Orleans. (AP Photo/Gerald Herbert)