Cleveland Browns quarterback Baker Mayfield signals during NFL football training camp Tuesday, Aug. 7, 2018, in Berea, Ohio.

Dallas Cowboys quarterback Dak Prescott (4) passes during an NFL training camp practice Tuesday, August 7, 2018 at City of Oxnard Fields in Oxnard, California. (James D. Smith via AP)

Atlanta Falcons wide receiver Julio Jones catches at an NFL football training camp practice in Flowery Branch, Ga., Friday, July 27, 2018.

Green Bay Packers' Jimmy Graham runs a drill during NFL football training camp Thursday, July 26, 2018, in Green Bay, Wis.

New York Giants quarterback Eli Manning (10) signs autographs after an NFL football training camp practice at the Quest Diagnostics training center on Saturday July 28, 2018 in East Rutherford, N.J.

Jacksonville Jaguars defensive end Yannick Ngakoue (91) smiles during training camp, Saturday, July. 28, 2018 in Jacksonville, Fla.

Kansas City Chiefs cornerback Step Durham, right, breaks up a pass intended for tight end Blake Mack during NFL football training camp Saturday, July 28, 2018, in St. Joseph, Mo.

Pop singer Ciara, the wife of Seattle Seahawks quarterback Russell Wilson, stands with their daughter Sienna, as she talks with Wilson after a session of Seahawks' NFL football training camp, Thursday, July 26, 2018, in Renton, Wash.

Dallas Cowboys cheerleaders perform at the team's opening ceremonies before an NFL training camp practice Saturday, July 28, 2018 at City of Oxnard Fields in Oxnard, California.

Jacksonville Jaguars defensive tackle Taven Bryan (90) and defensive tackle Calais Campbell (93) smile during training camp, Saturday, July. 28, 2018 in Jacksonville, Fla.

Washington Redskins offensive tackle Morgan Moses (76) works on a drill during the morning session of the Redskins NFL football training camp in Richmond, Va., Wednesday, Aug. 1, 2018.

Dallas Cowboys running back Ezekiel Elliott (21) runs during an NFL training camp practice Tuesday, August 7, 2018 at City of Oxnard Fields in Oxnard, California.

Tennessee Titans offensive tackle Taylor Lewan signs autographs after NFL football training camp Saturday, July 28, 2018, in Nashville, Tenn.

Injured Pittsburgh Steelers linebacker Ryan Shazier at practice during NFL football training camp in Latrobe, Pa., Friday, July 27, 2018.

Tampa Bay Buccaneers quarterback Ryan Fitzpatrick (14) throws a pass during an NFL football training camp practice Saturday, July 28, 2018, in Tampa, Fla.

Denver Broncos running back Devontae Booker takes part in drills during the team's NFL football training camp Saturday, July 28, 2018, in Englewood, Colo.

Carolina Panthers' Cam Newton (1) gives a thumbs up to the crowd during an NFL football practice at the team's training camp in Spartanburg, S.C., Saturday, July 28, 2018.

Tennessee Titans defensive back Malcolm Butler (21) runs back onto the field after making an interception during NFL football training camp Saturday, July 28, 2018, in Nashville, Tenn. Celebrating are fellow defensive players Logan Ryan (26), Johnathan Cyprien (37) and Rico Gafford (40).

Tennessee Titans punter Brett Kern (6) plays with his children after NFL football training camp Saturday, July 28, 2018, in Nashville, Tenn.

Members of the Kansas City Chiefs offense walk off the field after NFL football training camp Saturday, July 28, 2018, in St. Joseph, Mo.

Carolina Panthers' Luke Kuechly signs autographs during an NFL football practice at the team's training camp in Spartanburg, S.C., Friday, July 27, 2018.

Kansas City Chiefs quarterbacks Patrick Mahomes, front, Chad Henne, left, Matt McGloin, right, and Chase Litton, back, practice during NFL football training camp Saturday, July 28, 2018, in St. Joseph, Mo.

Carolina Panthers' Cam Newton (1) warms up during an NFL football practice at the team's training camp in Spartanburg, S.C., Saturday, July 28, 2018.

Carolina Panthers' Greg Olsen (88) reaches for a pass during an NFL football practice at the team's training camp in Spartanburg, S.C., Saturday, July 28, 2018.

Arizona Cardinals quarterback Josh Rosen, front, runs drills during the first day of their NFL football training camp, Saturday, July 28, 2018, in Glendale, Ariz.

Arizona Cardinals' Sam Bradford (9) throws during the first day of their NFL football training camp, Saturday, July 28, 2018, in Glendale, Ariz.

The Arizona Cardinals huddle up during the first day of their NFL football training camp, Saturday, July 28, 2018, in Glendale, Ariz.

Dallas Cowboys running back Ezekiel Elliott (21) runs during an NFL training camp practice Saturday, July 28, 2018 at City of Oxnard Fields in Oxnard, California.

New York Giants offensive tackle Nate Solder (76) during an NFL football training camp practice at the Quest Diagnostics training center on Friday July 27, 2018 in East Rutherford, N.J.

Dallas Cowboys quarterback Dak Prescott (4) passes during an NFL training camp practice Saturday, July 28, 2018 at City of Oxnard Fields in Oxnard, California.

Los Angeles Rams quarterback Jared Goff arrives for practice at the NFL football team's training camp Thursday, July 26, 2018, in Irvine, Calif.

Pittsburgh Steelers linebacker T.J. Watt (90) goes through drills at practice during NFL football training camp in Latrobe, Pa., Thursday, July 26, 2018.

Kansas City Chiefs cornerback Will Redmond reaches for the ball during NFL football training camp Thursday, July 26, 2018, in St. Joseph, Mo.

Los Angeles Rams running back Todd Gurley carries the ball during NFL football training camp Thursday, July 26, 2018, in Irvine, Calif.

Kansas City Chiefs quarterback Patrick Mahomes (15) throws during NFL football training camp Thursday, July 26, 2018, in St. Joseph, Mo.

Los Angeles Rams wide receiver Cooper Kupp makes a catch during NFL football practice, Thursday, July 26, 2018, in Irvine, Calif.

Buffalo Bills running back LeSean McCoy, left, runs a drill with fullback Patrick DiMarco during practice at the NFL football team's training camp in Pittsford, N.Y., Thursday, July 26, 2018.

Carolina Panthers' Cam newton 91) rolls out during an NFL football practice at training camp in Spartanburg, S.C., Thursday, July 26, 2018.

Los Angeles Rams cornerback Marcus Peters, left, knocks the ball loose from cornerback Aqib Talib during NFL football training camp Thursday, July 26, 2018, in Irvine, Calif.

Buffalo Bills quarterbacks Josh Allen (17), Nathan Peterman (2) and A.J. McCarron (10) run drills during practice at the NFL football team's training camp in Pittsford, N.Y., Thursday, July 26, 2018.

Kansas City Chiefs wide receiver Chris Conley takes a drink during NFL football training camp Thursday, July 26, 2018, in St. Joseph, Mo.

Kansas City Chiefs wide receiver Gehrig Dieter runs with the ball during NFL football training camp Thursday, July 26, 2018, in St. Joseph, Mo.

Carolina Panthers' Devin Funchess (17) runs after a catch during an NFL football practice at training camp in Spartanburg, S.C., Thursday, July 26, 2018.

Cleveland Browns quarterback Baker Mayfield, center, rushes during NFL football training camp, Thursday, July 26, 2018, in Berea, Ohio.

Carolina Panthers' CJ Anderson catches a pass during NFL football training camp in Spartanburg, S.C., Thursday, July 26, 2018.

Jacksonville Jaguars defensive tackle Calais Campbell (93) practices during training camp, Thursday, July. 26, 2018 in Jacksonville, Fla.

New York Giants wide receiver Odell Beckham makes a catch while working out with Eli Manning, not pictured, at the end of a session at NFL football training camp, Thursday, July 26, 2018, in East Rutherford, N.J.

Carolina Panthers' Cam Newton, left, hands the ball off to Christian McCaffrey during an NFL football training camp in Spartanburg, S.C., Thursday, July 26, 2018.

Pittsburgh Steelers wide receiver JuJu Smith-Schuster is greeted by young fans as he takes to the practice field during NFL football training camp in Latrobe, Pa., Thursday, July 26, 2018.

The Jacksonville Jaguars practice during training camp, Thursday, July. 26, 2018 in Jacksonville, Fla.

Carolina Panthers coach Ron Rivera, center, talks with new team owner David Tepper, left, during NFL football training camp in Spartanburg, S.C., Thursday, July 26, 2018.

Washington Redskins cornerback Orlando Scandrick, right, breaks up a pass intended for wide receiver Josh Doctson at NFL football training camp in Richmond, Va., Thursday, July 26, 2018.

New York Giants quarterback Eli Manning (10) and wide receiver Odell Beckham (13) work out together at the end of a work out during NFL football training camp, Thursday, July 26, 2018, in East Rutherford, N.J.

Pittsburgh Steelers wide receiver JuJu Smith-Schuster (19) dives for a pass as defensive back Joe Haden (23) covers in a goal-line scoring drill at practice during NFL football training camp in Latrobe, Pa., Thursday, July 26, 2018. Smith-Schuster did not catch the pass.

Jacksonville Jaguars running back Leonard Fournette (27) practices during training camp, Thursday, July. 26, 2018 in Jacksonville, Fla.

The U.S. Air Force Thunderbirds air demonstration squadron flies past a U.S. flag at the practice fields of Saint Vincent College during the Pittsburgh Steelers' NFL football training camp in Latrobe, Pa., Thursday, July 26, 2018.

San Francisco 49ers wide receiver Dante Pettis makes a between the legs catch during NFL football practice at the team's headquarters Thursday, July 26, 2018, in Santa Clara, Calif.

Minnesota Vikings tight end Tyler Conklin pulls in a pass during NFL football training camp in Eagan, Minn., Thursday, July 26, 2018.

Cleveland Browns defensive back Denzel Ward runs a drill during NFL football training camp, Thursday, July 26, 2018, in Berea, Ohio.

Cincinnati Bengals quarterback Andy Dalton, right, stretches during NFL football practice, Thursday, July 26, 2018, in Cincinnati.

Pittsburgh Steelers linebacker Bud Dupree (48) performs a drill through tackling dummies during NFL football training camp in Latrobe, Pa., Thursday, July 26, 2018.

New York Giants quarterback Eli Manning throws a pass during NFL football training camp, Thursday, July 26, 2018, in East Rutherford, N.J.

Cincinnati Bengals wide receiver A.J. Green catches a pass during NFL football practice, Thursday, July 26, 2018, in Cincinnati.

Indianapolis Colts quarterback Andrew Luck (12) throws on the first day of practice at the NFL team's football training camp in Westfield, Ind., Thursday, July 26, 2018.

Pittsburgh Steelers running back James Conner (30) and cornerback Cameron Sutton (20) greet each other at the start of practice at NFL football training camp in Latrobe, Pa., Thursday, July 26, 2018.

Cleveland Browns running back Nick Chubb, right, tries to avoid defensive back Elijah Campbell during NFL football training camp, Thursday, July 26, 2018, in Berea, Ohio.

New York Giants running back Saquon Barkley, left, takes a handoff during a drill at NFL football training camp, Thursday, July 26, 2018, in East Rutherford, N.J.

Cincinnati Bengals quarterback Andy Dalton throws during NFL football practice, Thursday, July 26, 2018, in Cincinnati.

New Orleans Saints cornerback Marshon Lattimore (23) reacts during NFL football practice in Metairie, La., Thursday, July 26, 2018.

Seattle Seahawks linebacker Shaquem Griffin hits a blocking sled during NFL football training camp, Thursday, July 26, 2018, in Renton, Wash.

New York Giants wide receiver Cody Latimer reacts as his son, Jacolby James Latimer, 2, pretends to tackle him at the completion of a workout at NFL football training camp, Thursday, July 26, 2018, in East Rutherford, N.J.

Dallas Cowboys linebacker Jaylon Smith reacts after a play during Dallas Cowboys' NFL training camp, Thursday, July 26, 2018, in Oxnard, Calif.

Dallas Cowboys running back Ezekiel Elliott (21) and quarterback Dak Prescott (4) run plays during Dallas Cowboys' NFL training camp, Thursday, July 26, 2018, in Oxnard, Calif.

Green Bay Packers' Davante Adams runs a drill during NFL football training camp Thursday, July 26, 2018, in Green Bay, Wis.

Seattle Seahawks' twin brothers, linebacker Shaquem Griffin, left, and cornerback Shaquill Griffin, greet fans after NFL football training camp, Thursday, July 26, 2018, in Renton, Wash.

Green Bay Packers' Davon House wears a mask to NFL football training camp Thursday, July 26, 2018, in Green Bay, Wis.

San Francisco 49ers' Richard Sherman (25) runs during NFL football practice at the team's headquarters Thursday, July 26, 2018, in Santa Clara, Calif.

Indianapolis Colts offensive guard Quenton Nelson (56) works against offensive tackle Jared Machorro (60) on the first day of practice at the NFL team's football training camp in Westfield, Ind., Thursday, July 26, 2018.

Green Bay Packers' Clay Matthews fixes his hair during NFL football training camp Thursday, July 26, 2018, in Green Bay, Wis.

San Francisco 49ers quarterbacks Nick Mullens (4) and Jimmy Garoppolo pass during NFL football practice at the team's headquarters Thursday, July 26, 2018, in Santa Clara, Calif.

Houston Texans wide receiver Vyncint Smith (17) runs the ball during the teams NFL football training camp in White Sulphur Springs, W.Va., Thursday, July 26, 2018.

Green Bay Packers' Aaron Rodgers runs a drill during NFL football training camp Thursday, July 26, 2018, in Green Bay, Wis.

Indianapolis Colts running back Marlon Mack (25) runs a drill on the first day of practice at the NFL team's football training camp in Westfield, Ind., Thursday, July 26, 2018.

Seattle Seahawks quarterback Russell Wilson (3) passes during NFL football training camp, Thursday, July 26, 2018, in Renton, Wash.

Houston Texans wide receiver Will Fuller V (15) fights for position with cornerback Jonathan Joseph (24) during the team's NFL football training camp in White Sulphur Springs, W.Va., Thursday, July 26, 2018.

New England Patriots quarterback Tom Brady (12) passes the ball as offensive coordinator Josh McDaniels, right, looks on during NFL football practice, Thursday, July 26, 2018, in Foxborough, Mass.

New Orleans Saints running back Mark Ingram, right, runs with the ball as defensive end Cameron Jordan (94) defends during NFL football practice in Metairie, La., Thursday, July 26, 2018.

Tennessee Titans offensive tackle Taylor Lewan kisses his daughter, Wynne, 1, as she is held by Lewan's wife, Taylin, following the first day of practice at NFL football training camp Thursday, July 26, 2018, in Nashville, Tenn.

Tampa Bay Buccaneers quarterback Jameis Winston (3) during an NFL football training camp practice Thursday, July 26, 2018, in Tampa, Fla.

New England Patriots tight end Rob Gronkowski performs agility drills during NFL football practice, Thursday, July 26, 2018, in Foxborough, Mass.

Philadelphia Eagles quarterback Carson Wentz (11) stretches with the team during practice at NFL football training camp, Thursday, July 26, 2018, in Philadelphia.

Washington Redskins quarterback Alex Smith (11) tosses a pass during drills at the start of the Redskins NFL football training camp in Richmond, Va., Thursday, July 26, 2018.

Miami Dolphins quarterback Ryan Tannehill plays with his son Steel at the NFL football team's training camp, Thursday, July 26, 2018, in Davie, Fla.

Tennessee Titans quarterback Marcus Mariota (8) hands off to running back Akrum Wadley (38) during NFL football training camp Thursday, July 26, 2018, in Nashville, Tenn.

New England Patriots wide receiver Julian Edelman performs an agility drill during NFL football practice, Thursday, July 26, 2018, in Foxborough, Mass.

Tennessee Titans offensive guard Josh Kline cools off in an ice tub following NFL football training camp practice Thursday, July 26, 2018, in Nashville, Tenn.

New Orleans Saints quarterback Drew Brees (9) throws the ball during NFL football practice in Metairie, La., Thursday, July 26, 2018.

New Orleans Saints running back Alvin Kamara (41) runs with the ball as linebacker Alex Anzalone (47) defends during NFL football practice in Metairie, La., Thursday, July 26, 2018.

Houston Texans defensive end J.J. Watt (99) goes through a drill during the teams NFL football training camp in White Sulphur Springs, W.Va., Friday, July 27, 2018.

Miami Dolphins quarterback Brock Osweiler plays with his daughter at the NFL football team's training camp, Thursday, July 26, 2018, in Davie, Fla.

Pittsburgh Steelers wide receiver Antonio Brown, center right, smiles as he after arriving for NFL football training camp with his family in a helicopter in Latrobe, Pa., Wednesday, July 25, 2018.

Minnesota Vikings quarterback Kirk Cousins, center, works among rookie prospects as they reported to the NFL football team complex for the opening of training camp Wednesday, July 25, 2018, in Eagan, Minn.

Baltimore Ravens defensive back Jackson Porter (33) catches a pass during an NFL football training camp practice at the team's headquarters, Friday, July 20, 2018, in Owings Mills, Md.

New York Giants head coach Pat Shurmur talks to his team following an NFL football training camp practice at the Quest Diagnostics training center on Wednesday July 25, 2018 in East Rutherford, N.J.

Kansas City Chiefs running back Damien Williams runs a drill at NFL football training camp Monday, July 23, 2018, in St. Joseph, Mo.

Baltimore Ravens quarterback Joe Flacco throws a pass during an NFL football training camp practice at the team's headquarters, Friday, July 20, 2018, in Owings Mills, Md.

Chicago Bears wide receiver Anthony Miller tries to catch a ball during an NFL football training camp in Bourbonnais, Ill., Saturday, July 21, 2018.

Indianapolis Colts quarterback Andrew Luck (12) speaks with the media on the opening day of the NFL team's football training camp in Westfield, Ind., Wednesday, July 25, 2018.

Baltimore Ravens quarterback Robert Griffin III throws a pass during an NFL football training camp practice at the team's headquarters, Friday, July 20, 2018, in Owings Mills, Md.

Kansas City Chiefs tight end Blake Mack (88) stretches at NFL football training camp Monday, July 23, 2018, in St. Joseph, Mo.

Baltimore Ravens wide receiver Chris Moore runs a drill during an NFL football training camp practice at the team's headquarters, Friday, July 20, 2018, in Owings Mills, Md.

New York Giants linebacker Lorenzo Carter (59) during an NFL football training camp practice at the Quest Diagnostics training center on Wednesday July 25, 2018 in East Rutherford, N.J.

Chicago Bears offensive line Rashaad Coward, left, works with offensive line Brandon Greene during an NFL football training camp in Bourbonnais, Ill., Saturday, July 21, 2018.

Chicago Bears linebacker Elijah Norris, right, autographs for fans during an NFL football training camp in Bourbonnais, Ill., Saturday, July 21, 2018.

Kansas City Chiefs quarterback Matt McGloin (5) throws during NFL football training camp Monday, July 23, 2018, in St. Joseph, Mo.

Baltimore Ravens wide receiver DeVier Posey runs a drill during an NFL football training camp practice at the team's headquarters, Friday, July 20, 2018, in Owings Mills, Md.

Minnesota Vikings tight ends coach Clancy Barone, center, talks with offensive linemen during walk-throughs as training camp opened for rookies and certain veterans at the NFL football team's complex Wednesday, July 25, 2018, in Eagan, Minn. Tony Sparano, the team's head offensive line coach, died on Sunday of a heart condition.

In this image taken with a slow shutter speed, New York Giants running back Saquon Barkley works out during NFL football training camp, Wednesday, Aug. 1, 2018, in East Rutherford, N.J. (AP Photo/Julio Cortez)

Detroit Lions receiver Kenny Golladay catches during NFL football practice, Wednesday, Aug. 1, 2018, in Allen Park, Mich.

Washington Redskins wide receiver Jamison Crowder (80) hauls in a pass in front of defensive back Montae Nicholson (35) during the morning session of the Redskins NFL football training camp in Richmond, Va., Wednesday, Aug. 1, 2018.

Jacksonville Jaguars wide receiver D.J. Chark, left, makes a reception against cornerback Jalen Myrick (31) during a practice at NFL football training camp, Wednesday, Aug. 1, 2018, in Jacksonville, Fla.

Oakland Raiders' Keon Hatcher catches a pass during NFL football practice in Napa, Calif., Wednesday, Aug. 1, 2018.

New York Giants defensive back Landon Collins dives into the end zone after returning an interception on a pass from quarterback Eli Manning during NFL football training camp, Wednesday, Aug. 1, 2018, in East Rutherford, N.J.

Los Angeles Rams head coach Sean McVay yells during NFL football practice, Thursday, July 26, 2018, in Irvine, Calif.

New England Patriots defensive back Jason McCourty (30) walks on the practice field with his twin defensive back Devin McCourty (32) during the team's NFL football training camp in Foxborough, Friday, July 27, 2018.

San Francisco 49ers running back Jerick McKinnon (28) runs with the ball during NFL football practice at the team's headquarters Saturday, July 28, 2018, in Santa Clara, Calif.

Dallas Cowboys receiver Michael Gallup (13) turns to run after a catch during an NFL training camp practice Saturday, August 4, 2018 at City of Oxnard Fields in Oxnard, California.

Philadelphia Eagles' Josh Adams runs a drill during NFL football training camp Tuesday, Aug. 7, 2018 in Philadelphia.

Philadelphia Eagles quarterback Carson Wentz during NFL football training camp Tuesday, Aug. 7, 2018 in Philadelphia.

Philadelphia Eagles' Greg Ward during NFL football training camp Tuesday, Aug. 7, 2018 in Philadelphia.

Denver Broncos defensive line coach Bill Kollar takes part in drills during an NFL football training camp Tuesday, Aug. 7, 2018, in Englewood, Colo.

Pittsburgh Steelers wide receiver Darrius Heyward-Bey at practice during NFL football training camp in Latrobe, Pa., Tuesday, Aug. 7, 2018.

Cleveland Browns defensive tackle Larry Ogunjobi straddles a bag during NFL football training camp Tuesday, Aug. 7, 2018, in Berea, Ohio.

Dallas Cowboys running back Bo Scarbrough (36) jumps to make a catch as linebacker Justin March-Lillard (53) defends during an NFL training camp practice Tuesday, August 7, 2018 at City of Oxnard Fields in Oxnard, California.

Denver Broncos quarterback Chad Kelly (6) takes part in drills during an NFL football training camp Tuesday, Aug. 7, 2018, in Englewood, Colo.