Nfl

b06f4d4b1de8ae03490f6a7067008060.jpg

Seattle Seahawks' Richard Sherman laughs as he speaks during a news conference Wednesday, Jan. 22, 2014, in Renton, Wash. The Seahawks play the Denver Broncos in the NFL football Super Bowl on Feb. 2. (AP Photo/Elaine Thompson)

4c0cb3131dedae03490f6a7067009dad.jpg

Seattle Seahawks' Richard Sherman speaks during a news conference Wednesday, Jan. 22, 2014, in Renton, Wash. The Seahawks play the Denver Broncos in the NFL football Super Bowl on Feb. 2. (AP Photo/Elaine Thompson)

768595991deaae03490f6a7067009c5b.jpg

Seattle Seahawks' Richard Sherman speaks at an NFL football news conference Wednesday, Jan. 22, 2014, in Renton, Wash. The Seahawks play the Denver Broncos in the Super Bowl on Feb. 2. (AP Photo/Elaine Thompson)

935f28e91dbbad03490f6a7067001997.jpg

FILE - In this Jan. 17, 1971, file photo, Dallas Cowboys quarterback is hit from the rear by Baltimore Colts' Roy Hilton (85) in the first period of NFL football's Super Bowl in Miami, Fla. Peyton Manning will become only the third quarterback to start for two franchises in the Super Bowl. The first guy to do it, Morton, is among the thousands of former players suing the NFL about concussions. (AP Photo/File)

a7e158221dbbad03490f6a706700ee68.jpg

FILE - In this Jan. 15, 1978 file photo, Denver Broncos quarterback Craig Morton (7) rests briefly on his knees after being sacked by Dallas Cowboys defensive end Ed Jones (72) following the play during NFL football's Super Bowl XII in New Orleans. The Cowboys defeated the Broncos 27-10. Peyton Manning will become only the third quarterback to start for two franchises in the Super Bowl. The first guy to do it, Morton, is among the thousands of former players suing the NFL about concussions. (AP Photo/File)