Carolina Panthers quarterback Cam Newton answers questions during a press conference Tuesday, Feb. 2, 2016 in San Jose, Calif. Carolina plays the Denver Broncos in the NFL Super Bowl 50 football game Sunday, Feb. 7, 2015, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

Tuesday, February 2, 2016: Carolina Panthers quarterback Cam Newton (1) talks to the media at the San Jose Convention Center during a press conference for the National Football League Super Bowl 50 between the Denver Broncos and the Carolina Panthers. Eric Canha/CSM (Cal Sport Media via AP Images)

Carolina Panthers quarterback Cam Newton wears sneakers with his team's colors during a press conference Tuesday, Feb. 2, 2016 in San Jose, Calif. Carolina plays the Denver Broncos in the NFL Super Bowl 50 football game Sunday, Feb. 7, 2015, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

A necklace worn by Denver Broncos linebacker Danny Trevathan is shown as he speaks to reporters in Santa Clara, Calif., Wednesday, Feb. 3, 2016. The Denver Broncos will play the Carolina Panthers in Super Bowl 50 Sunday, Feb. 7, 2016. (AP Photo/Jeff Chiu)

Halftime costumes are seen on display during an NFL Shop Juniors event at the Moscone Center on January 31, 2016 in San Francisco. (AP Photo/Tony Avelar)

A Super Bowl 50 football designed by Nicole Miller is seen on display during an NFL Shop Juniors event at the Moscone Center on January 31, 2016 in San Francisco. (AP Photo/Tony Avelar)

Myles Parrish, Madison Pettis and Kalin White pose for a photo during an NFL Shop Juniors event at the Moscone Center on January 31, 2016 in San Francisco. (AP Photo/Tony Avelar)

Carolina Panthers quarterback Cam Newton arrives at the San Jose International Airport on Sunday, January 31, 2016, in San Jose, CA. (Perry Knotts/NFL)

Carolina Panthers outside linebacker Thomas Davis arrives at the San Jose International Airport on Sunday, January 31, 2016, in San Jose, CA. (Perry Knotts/NFL)

Carolina Panthers wide receiver Kelvin Benjamin greets former player Mike Rucker at the San Jose International Airport on Sunday, January 31, 2016, in San Jose, CA. (Perry Knotts/NFL)

Denver Broncos quarterback Peyton Manning arrives for Super Bowl 50 at the San Jose International Airport on Sunday, Jan. 31, 2016, in San Jose, Calif. (Perry Knotts/NFL)

Denver Broncos outside linebacker Von Miller greets former player Terrell Davis at the San Jose International Airport on Sunday, Jan. 31, 2016, in San Jose, Calif. (Perry Knotts/NFL)

Denver Broncos cornerback Bradley Roby greets former player Terrell Davis at the San Jose International Airport on Sunday, Jan. 31, 2016, in San Jose, Calif. (Perry Knotts/NFL)

Denver Broncos tackle Ryan Harris greets former player Terrell Davis at the San Jose International Airport on Sunday, Jan. 31, 2016, in San Jose, Calif. (Perry Knotts/NFL)

Denver Broncos tight end Owen Daniels greets former player Terrell Davis at the San Jose International Airport on Sunday, Jan. 31, 2016, in San Jose, Calif. (Perry Knotts/NFL)

Denver Broncos outside linebacker Von Miller arrives at the San Jose International Airport on Sunday, Jan. 31, 2016, in San Jose, Calif. (Perry Knotts/NFL)

Carolina Panthers quarterback Derek Anderson, tight end Greg Olsen, and middle linebacker Luke Kuechly pose for photo after arriving for Super Bowl 50 at the San Jose International Airport on Sunday, January 31, 2016, in San Jose, Calif. (Perry Knotts/NFL)

The Denver Broncos arrive at the San Jose International Airport on Sunday, Jan. 31, 2016, in San Jose, Calif. (Perry Knotts/NFL)