In this photo taken with a fisheye lens, fans cheer following the singing of the national anthem before the kickoff at an NFL football divisional playoff game between the Denver Broncos and the Indianapolis Colts, Sunday, Jan. 11, 2015, in Denver. (AP Photo/Brennan Linsley)

Carolina Panthers quarterback Cam Newton (1) tries to avoid the rush of Seattle Seahawks defensive end Cliff Avril (56) during the NFL divisional playoff football game against the Carolina Panthers and the Seattle Seahawks on Sunday, Jan. 10, 2015 in Seattle. (Ric Tapia/NFL)

Seattle Seahawks cornerback Richard Sherman, right, intercepts a pass intended for Carolina Panthers wide receiver Philly Brown during the first half of an NFL divisional playoff football game in Seattle, Saturday, Jan. 10, 2015. (AP Photo/Elaine Thompson)

Indianapolis Colts Head Coach Chuck Pagano embraces his father Sam Pagano after the NFL divisional playoff game against the Denver Broncos on Sunday, Jan. 11, 2015 in Denver. (Ric Tapia/NFL)

New England Patriots strong safety Duron Harmon (30) intercepts a pass by Baltimore Ravens quarterback Joe Flacco in front of Baltimore Ravens wide receiver Torrey Smith (82) in the second half of an NFL divisional playoff football game Saturday, Jan. 10, 2015, in Foxborough, Mass. (AP Photo/Charles Krupa)

Indianapolis Colts linebacker Jonathan Newsome, left, reaches in to force Denver Broncos quarterback Peyton Manning fumble during the first half of an NFL divisional playoff football game, Sunday, Jan. 11, 2015, in Denver. (AP Photo/Jack Dempsey)

New England Patriots wide reciever Danny Amendola (80) dives into the end zone to avoid a Baltimore Ravens defender during an NFL divisional playoff football game against the Baltimore Ravens at Gillette Stadium on Saturday January 10, 2015 in Foxboro, Massachusetts. (Aaron M. Sprecher/NFL)

Green Bay Packers tight end Andrew Quarless celebrates a touchdown with fans during the first half of an NFL divisional playoff football game against the Dallas Cowboys Sunday, Jan. 11, 2015, in Green Bay, Wis. (AP Photo/Matt Ludtke)

Indianapolis Colts quarterback Andrew Luck (12) throws as Denver Broncos defensive end Derek Wolfe (95) makes the hit during the first half of an NFL divisional playoff football game, Sunday, Jan. 11, 2015, in Denver. (AP Photo/Jack Dempsey)

Dallas Cowboys wide receiver Dez Bryant (88) is unable to catch a pass against Green Bay Packers cornerback Sam Shields (37) in the fourth quarter in the 2014 NFC Divisional playoff football game at Lambeau Field. (Andrew Weber/USA TODAY Sports)