Nfl

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FILE - In this Feb. 4, 2016 file photo, NFL Senior Vice President of Health and Safety Policy Jeff Miller speaks during an NFL health and safety news conference in San Francisco. An NFL official has acknowledged a link between football and the brain disease CTE for the first time. Miller, the NFL's senior vice president for health and safety, spoke about the connection during an appearance Monday, March 14, 2016, at a congressional committee's round table discussion about concussions. (AP Photo/David J. Phillip, File)

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Washington Redskins kicker Dustin Hopkins (3), with Tress Way holding, kicks a field goal against the New York Jets during the first half of an NFL football game, Sunday, Oct. 18, 2015, in East Rutherford, N.J. (AP Photo/Gary Hershorn)

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Denver Broncos Brock Osweiler (17) warms up before the NFL Super Bowl 50 football game against the Carolina Panthers Sunday, Feb. 7, 2016, in Santa Clara, Calif. (AP Photo/Julio Cortez)

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NFL Commissioner Roger Goodell leaves federal court, Wednesday, Aug. 12, 2015, in New York, after a full day of talks with a federal judge in the dispute over a four-game suspension with New England Patriots quarterback Tom Brady.(AP Photo/Mary Altaffer)

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Washington Redskins first round NFL football draft pick, Robert Griffin III, speaks at a press conference, Saturday, April 28, 2012, in Landover, Md. (AP Photo/Nick Wass)

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Washington Redskins quarterback Robert Griffin III (10) celebrates with fans after a 76-yard touchdown run during the second half of an NFL football game against the Minnesota Vikings, Sunday, Oct. 14, 2012, in Landover, Md. (AP Photo/Pablo Martinez Monsivais)

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Denver Broncos’ Peyton Manning #18 in action against the Carolina Panthers during the NFL Super Bowl 50 football game Sunday, Feb. 7, 2016, in Santa Clara, Calif. (AP Photo/Gregory Payan)

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Carolina Panthers’ Cam Newton (1) looks dejectedly at the scoreboard during the NFL Super Bowl 50 football game Sunday, Feb. 7, 2016, in Santa Clara, Calif. (AP Photo/Gregory Payan)

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Denver Broncos’ Von Miller (58) celebrates a sack/strip of with teammates in the fourth quarter of the NFL Super Bowl 50 football game Sunday, Feb. 7, 2016, in Santa Clara, Calif. (AP Photo/Gregory Payan)

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Beyonce performs during halftime of the NFL Super Bowl 50 football game Sunday, Feb. 7, 2016, in Santa Clara, Calif. (AP Photo/Matt Slocum)

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Former NFL players Kevin Greene, left, and Brett Favre, who will be inducted into the Pro Football Hall of Fame class of 2016, attend the Hall of Fame press room at the the 5th annual NFL Honors at the Bill Graham Civic Auditorium on Saturday, Feb. 6, 2016, in San Francisco. (Photo by Jack Dempsey/Invision for NFL/AP Images)

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Logo courtesy of NFL and CBS Sports.

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Carolina Panthers' Cam Newton celebrates a first down run during the second half the NFL football NFC Championship game against the Arizona Cardinals, Sunday, Jan. 24, 2016, in Charlotte, N.C. (AP Photo/Chuck Burton)

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In this Dec. 6, 2015, file photo, the Miami Dolphins cheerleaders perform during the first half of an NFL football game against the Baltimore Ravens, in Miami Gardens, Fla. (AP Photo/Wilfredo Lee, File)

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Carolina Panthers quarterback Cam Newton (1) cheers on the sidelines during the second half of an NFL divisional playoff football game against the Seattle Seahawks, Sunday, Jan. 17, 2016, in Charlotte, N.C. The Carolina Panthers won 31-24.(AP Photo/Chuck Burton)