Athlete compensation

FILE - In this Aug. 31, 2018, file photo, Serena Williams walks on a practice court with her coach Patrick Mouratoglou during the third round of the U.S. Open tennis tournament, in New York. Williams was fined a total of $17,000 for three code violations during her loss to Naomi Osaka in the U.S. Open final. On Sunday, a day after the match, the tournament referee's office docked Williams $10,000 for "verbal abuse" of chair umpire Carlos Ramos, $4,000 for being warned for coaching and $3,000 for breaking her racket. (AP Photo/Adam Hunger, File)

FILE - This Oct. 22, 2016, file photo shows Los Angeles Rams defensive tackle Aaron Donald on stage during an NFL Fan Rally in London. All-Pro defensive tackle Aaron Donald has agreed to a massive new contract with the Los Angeles Rams, ending his second consecutive preseason holdout as the highest-paid defensive player in NFL history. The Rams on Friday, Aug. 31, 2018, announced a new six-year deal through 2024 for Donald, the reigning NFL Defensive Player of the Year. (AP Photo/Tim Ireland, File)

FILE - In this Aug. 16, 2018, file photo, Green Bay Packers' Aaron Rodgers gestures during the first half of a preseason NFL football game against the Pittsburgh Steelers, in Green Bay, Wis. The Packers just need to keep Rodgers upright and healthy for a full season again. A glimpse at what life is like without Rodgers showed just how precious these windows of opportunity can be with a two-time NFL MVP at quarterback.(AP Photo/Jeffrey Phelps, File)

FILE - In this Aug. 24, 2018, file photo, New York Giants wide receiver Odell Beckham Jr. (13) watches from the sidelines during the fourth quarter of a preseason NFL football game against the New York Jets, in East Rutherford, N.J. Beckham Jr. is now the NFL’s highest-paid wide receiver. A person familiar with the negotiations told The Associated Press Monday, Aug. 27, 2018, the team agreed to a five-year contract extension with the three-time Pro Bowler. The person spoke on condition of anonymity because the Giants have not announced the deal, which comes less than two weeks before the season opener against Jacksonville.(AP Photo/Julio Cortez, File)

FC Barcelona's Lionel Messi talks to the crowd ahead of the Joan Gamper trophy friendly soccer match between FC Barcelona and Boca Juniors at the Camp Nou stadium in Barcelona, Spain, Wednesday, Aug. 15, 2018. (AP Photo/Manu Fernandez)

Tampa Bay Rays pitcher Chris Archer throws against the Baltimore Orioles in the first inning of a baseball game, Friday, July 27, 2018, in Baltimore. (AP Photo/Gail Burton)

FILE - In this May 1, 2018, file photo Toronto Blue Jays' pitcher Roberto Osuna throws against the Minnesota Twins in a baseball game in Minneapolis. The Houston Astros traded Ken Giles to the Blue Jays along with a pair of pitching prospects for Roberto Osuna. Houston also sent right-handers David Paulino and Hector Perez to Toronto as part of the deal, struck a day before the deadline for trades without waivers. The 23-year-old Osuna is eligible to pitch in the major leagues starting Sunday after a 75-game suspension under Major League Baseball's domestic violence policy. (AP Photo/Jim Mone, file)

FILE - In this May 1, 2018, file photo Toronto Blue Jays' pitcher Roberto Osuna throws against the Minnesota Twins in a baseball game in Minneapolis. The Houston Astros traded Ken Giles to the Blue Jays along with a pair of pitching prospects for Roberto Osuna. Houston also sent right-handers David Paulino and Hector Perez to Toronto as part of the deal, struck a day before the deadline for trades without waivers. The 23-year-old Osuna is eligible to pitch in the major leagues starting Sunday after a 75-game suspension under Major League Baseball's domestic violence policy. (AP Photo/Jim Mone, file)