Nfl

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Tennessee Titans quarterback Marcus Mariota (8) signs autographs for kids after the first practice of NFL football training camp, Saturday, July 29, 2017, in Nashville, Tenn. (George Walker IV/The Tennessean via AP)

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Oakland Raiders quarterback Derek Carr passes during an NFL football training camp on Saturday, July 29, 2017, in Napa, Calif. (AP Photo/Ben Margot)

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Oakland Raiders running back Marshawn Lynch, left, and quarterback Derek Carr converse during an NFL football training camp on Saturday, July 29, 2017, in Napa, Calif. (AP Photo/Ben Margot)

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Oakland Raiders coach Jack Del Rio gestures during an NFL football training camp on Saturday, July 29, 2017, in Napa, Calif. (AP Photo/Ben Margot)

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Tampa Bay Buccaneers defensive tackle Gerald McCoy (93) works against offensive guard J.R. Sweezy during an NFL football training camp practice Saturday, July 29, 2017, in Tampa, Fla. (AP Photo/Chris O'Meara)

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Tampa Bay Buccaneers defensive tackle Gerald McCoy (93) stretches during an NFL football training camp practice Saturday, July 29, 2017, in Tampa, Fla. (AP Photo/Chris O'Meara)

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New York Jets wide receiver Lucky Whitehead runs a drill during NFL football training camp, Saturday, July 29, 2017, in Florham Park, N.J. (AP Photo/Julio Cortez)

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New York Jets wide receiver Lucky Whitehead looks on during NFL football training camp, Saturday, July 29, 2017, in Florham Park, N.J. (AP Photo/Julio Cortez)

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New York Jets wide receiver Lucky Whitehead runs with the ball during NFL football training camp during NFL football training camp, Saturday, July 29, 2017, in Florham Park, N.J. (AP Photo/Julio Cortez)

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Denver Broncos running back C.J. Anderson takes part in drills at an NFL football training camp, Saturday, July 29, 2017, in Englewood, Colo. (AP Photo/David Zalubowski)

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Denver Broncos linebacker Kasim Edebali jokes with teammates after signing autographs for fans at an NFL football training camp Saturday, July 29, 2017, in Englewood, Colo. (AP Photo/David Zalubowski)

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Denver Broncos outside linebacker Von Miller dances while taking part in drills at an NFL football training camp, Saturday, July 29, 2017, in Englewood, Colo. (AP Photo/David Zalubowski)

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Denver Broncos outside linebacker Von Miller signs autographs for fans after drills at an NFL football training camp, Saturday, July 29, 2017, in Englewood, Colo. (AP Photo/David Zalubowski)

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New York Giants wide receiver Odell Beckham, right, makes a catch as general manager Jerry Reese, left, looks on during NFL football training camp, Saturday, July 29, 2017, in East Rutherford, N.J. (AP Photo/Julio Cortez)

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New York Giants cornerback Janoris Jenkins (20) intercepts a pass intended for wide receiver Sterling Shepard (87) during NFL football training camp, Saturday, July 29, 2017, in East Rutherford, N.J. (AP Photo/Julio Cortez)

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New York Giants wide receiver Brandon Marshall (15) runs with the ball as wide receiver Odell Beckham (13) pretends to defend against him during a drill at NFL football training camp, Saturday, July 29, 2017, in East Rutherford, N.J. (AP Photo/Julio Cortez)