Washington Redskins running back Silas Redd (32) executes a nifty backflip after defeating the Dallas Cowboys on "Monday Night Football." (Ric Tapia/NFL)

The Seattle Seahawks' "Legion of Boom" players huddle together before an NFC Championship Game against the Green Bay Packers. (Ric Tapia/NFL)

Utah tight end Anthony Denham waits before running the 40-yard dash at the 2014 NFL Scouting Combine. (AP Photo/Nam Y. Huh)

New Orleans Saints tight end Jimmy Graham of Team Irvin dunks the ball over the goal post in celebration after a touchdown during the Pro Bowl in Glendale, Ariz. (Ben Liebenberg/NFL)

Indianapolis Colts quarterback Andrew Luck (12) shows his frustration on the sideline during the AFC Championship Game against the New England Patriots at Gillette Stadium. The Patriots won the game, 45-7, to advance to Super Bowl XLIX. (Perry Knotts/NFL)

Seattle Seahawks wide receiver Jermaine Kearse (15) throws the ball into the stands after scoring the game-winning touchdown against the Green Bay Packers during overtime of the NFC Championship Game. The Seahawks won, 28-22, to advance to Super Bowl XLIX. (AP Photo/Jeff Chiu)

Sammy Watkins takes a photo with NFL Commissioner Roger Goodell after being selected by the Buffalo Bills during the 2014 NFL Draft at Radio City Music Hall in New York. (Ben Liebenberg/NFL)

Chicago Bears wide receiver Brandon Marshall (15) celebrates a touchdown with a teammate against the Green Bay Packers at Soldier Field. (Todd Rosenberg/NFL)

Stars and stripes fill the stands and fireworks salute the troops before the start of Week 10 game between the Chicago Bears and Green Bay Packers at Lambeau Field. (Todd Rosenberg/NFL)

The Carolina Panthers' Cam Newton jokes with line judge Carl Johnson during training camp in Spartanburg, S.C. (AP Photo/Chuck Burton)

San Diego Chargers tight end Antonio Gates celebrates his touchdown against the Seattle Seahawks. (AP Photo/Gregory Bull)

Houston Texans defensive end J.J. Watt arrives to the fourth annual NFL Honors awards show at the Phoenix Symphony Hall. (Perry Knotts/NFL)

The Green Bay Packers' Clay Matthews celebrates after the New England Patriots missed a field goal attempt late in the Packers' 26-21 win. (AP Photo/Tom Lynn)

Pittsburgh Steelers linebacker James Harrison peers through the holes in his chinstrap as he warms up before a game against the Tampa Bay Buccaneers. (AP Photo/Gene J. Puskar)

Kansas City Chiefs running back Jamaal Charles falls forward after being tackled by Oakland Raiders outside linebacker Khalil Mack as defensive back Larry Asante (42) approaches. (AP Photo/Marcio Jose Sanchez)

Tennessee Titans wide receiver Kendall Wright (13) scores a touchdown in front of Kansas City Chiefs cornerback Sean Smith. (AP Photo/Ed Zurga)

Katy Perry and Missy Elliott perform during halftime of Super Bowl XLIX at University of Phoenix Stadium. (Steve Sanders/NFL)

Rob Gronkowski celebrates following the New England Patriots' win in Super Bowl XLIX. (Ben Liebenberg/NFL)

The Houston Texans' J.J. Watt returns a fumble against the Indianapolis Colts for a 45-yard touchdown. (AP Photo/Patric Schneider)

The referee conducts the coin toss before the wild-card game between the Detroit Lions and Dallas Cowboys. (Ric Tapia/NFL)

Pittsburgh Steelers running back Le'Veon Bell scores on a 10-yard touchdown reception against Cincinnati Bengals. (AP Photo/Michael Conroy)

New York Jets cornerback Antonio Allen (39) and Demario Davis (56) sack the New England Patriots' Tom Brady. (AP Photo/Bill Kostroun)

New York Giants wide receiver Odell Beckham Jr. makes a one-handed catch for a touchdown against the Dallas Cowboys. (AP Photo/Julio Cortez)

Seattle Seahawks fans yell as Green Bay Packers quarterback Aaron Rodgers (12) tries to run a play. (AP Photo/Scott Eklund)

New England Patriots strong safety Malcolm Butler (21) intercepts a pass intended for Seattle Seahawks wide receiver Ricardo Lockette to clinch the New England Patriots' fourth Super Bowl title. (AP Photo/Kathy Willens)