Seattle Seahawks head coach Pete Carroll looks towards the referee for a call in the first quarter against the New England Patriots during the NFL Super Bowl XLIX football game in Glendale, Ariz. on Feb. 1, 2015.
Seattle Seahawks middle linebacker Bobby Wagner (54) gets past New England Patriots running back Brandon Bolden (38) after intercepting a pass during the second half of NFL Super Bowl XLIX football game Sunday, Feb. 1, 2015, in Glendale, Ariz.
NFL commissioner Roger Goodell looks on as New England Patriots owner Robert Kraft speaks at an NFL press conference announcing new measures for the league's personal conduct policy during an owners meeting on Dec. 10, 2014, in Irving, Texas.
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NFL running back Adrian Peterson of the Minnesota Vikings addresses the media after pleading "no contest" to a lesser misdemeanor charge of reckless assault on Nov. 4, 2014 in Conroe, Texas.
Jamie Sabau—Getty Images
NFL Commissioner Roger Goodell meets fans on the field before a game between the New York Jets and Buffalo Bills at Ford Field on November 24, 2014 in Detroit, Michigan.
Leon Halip—Getty Images
NFL Commissioner Roger Goodell attends the Buffalo Bills-New York Jets game at Ford Field on November 24, 2014 in Detroit, Michigan.
New Jersey Gov. Chris Christie, left, and Dallas Cowboys owner Jerry Jones talk before an NFL football game between the New York Giants and the Cowboys on Sept. 8, 2013, in Arlington, Texas.
Dallas Cowboys running back DeMarco Murray celebrates a touchdown run during the second half of an NFL wildcard playoff football game against the Detroit Lions, Jan. 4, 2015, in Arlington, Texas.
Suspended Minnesota Vikings running back Adrian Peterson exits following his hearing against the NFL over his punishment for child abuse, in New York Dec. 2, 2014
Suspended Minnesota Vikings running back Adrian Peterson (L) exits following his hearing against the NFL over his punishment for child abuse, in New York City on Dec. 2, 2014.
Bob Levey—Getty Images
Defense attorney Rusty Hardin, left, and NFL running back Adrian Peterson of the Minnesota Vikings address the media on November 4, 2014 in Conroe, Texas.
Joe Robbins—Getty Images
Johnny Manziel of the Cleveland Browns looks on during an NFL preseason game against the St. Louis Rams at FirstEnergy Stadium on August 23, 2014 in Cleveland, Ohio.
Baltimore Ravens running back Ray Rice sits on the sideline in the first half of an NFL preseason football game against the San Francisco 49ers on Aug. 7, 2014, in Baltimore.
Buffalo Bills wide receiver Chris Hogan catches a pass during warmups before the start of an NFL football game against the Miami Dolphins, Thursday, Nov. 13, 2014 in Miami Gardens, Fla.
Richard Heathcote—Getty Images
Cortland Finnegan of the Miami Dolphins celebrates with teammates after returning a fumble 50 yards to score a touchdown during the NFL match between the Oakland Raiders and the Miami Dolphins at Wembley Stadium on Sept. 28, 2014 in London,
Marcio Jose Sanchez—AP
Oakland Raiders quarterback Derek Carr celebrates after the Raiders defeated the Kansas City Chiefs 24-20 in an NFL football game in Oakland, Calif., Nov. 20, 2014.