Barcelona's French forward Antoine Griezmann celebrates after scoring a second goal during the Spanish League football match between Barcelona and Real Betis at the Camp Nou stadium in Barcelona on August 25, 2019. (Photo by Albert Gea/Reuters)





(L-R) Oliver Stanhope, James C. Fox, Giedre Rakauskaite, Ellen Buttrick and Coxswain Erin Wysocki-Jones of Great Britain during training ahead of Day Three of the 2019 World Rowing Championships on August 27, 2019 in Linz-Ottensheim, Austria. (Photo by Naomi Baker/Getty Images)





Russia's Anzhelika Sidorova competes in the women's Pole Vault indoor event during the Weltklasse IAAF Diamond League international athletics meeting at the main railway station in Zurich, Switzerland, 28 August 2019. (Photo by Walter Bieri/EPA/EFE)





Maria Sharapova of Russia returns the ball to Serena Williams of the United Sates during their Round 1 women's Singles match at the 2019 US Open at the USTA Billie Jean King National Tennis Center in New York on August 26, 2019 (Photo by Robert Deutsch/USA TODAY Sports)





Israel's Sagi Muki and Belgium's Matthias Casse compete in the Men's Under 81 Kg gold medal contest at the World Judo Championships in Tokyo, Japan, August 28, 2019. (Photo by Kim Kyung-Hoon/Reuters)





Rangers' Ryan Jack in action with Legia Warszawa's Sandro Kulenovic during Europe League playoffs in Glasgow, Britain, August 29, 2019. (Photo by Lee Smith/Action Images via Reuters)





Danielle Collins of the US reacts to a point in the first set while playing Caroline Wozniacki of Denmark during Round Two Women's Singles tennis match of the 2019 US Open at the USTA Billie Jean King National Tennis Center in New York on August 29, 2019. (Photo by Robert Deutsch/USA TODAY Sports)





Supporters and players of Red Star Belgrade celebrate with flares on top of an armored troop carrier in Belgrade, Serbia, Tuesday, August 27, 2019. After parking a battle tank at the gates of their stadium, Red Star Belgrade fans and players packed into an open-top armored troop carrier to mark their Champions League qualification. (Photo by AP Photo)





Spain's rider Alex Rins of the Team SUZUKI ECSTAR steers his motorcycle followed by Spain's rider Maverick Vinales of the Monster Energy Yamaha MotoGP during the MotoGP race at the British Motorcycle Grand Prix at the Silverstone racetrack, in Silverstone, England, Sunday, August 25, 2019. (Photo by Rui Vieira/AP Photo)





Coco Gauff, of the United States, returns a shot to Anastasia Potapova, of Russia, during the first round of the US Open tennis tournament Tuesday, August 27, 2019, in New York. (Photo by Julie Jacobson/AP Photo)





In this Saturday, November 10, 2018 file photo, South Africa's Aphiwe Dyantyi, left, attempts to catch the ball as France's Teddy Thomas runs in during their rugby union international at the Stade de France in Paris, France. South Africa wing Aphiwe Dyantyi, who won world rugby's breakthrough player award in 2018, says he has failed a doping test. (Photo by Christophe Ena/AP Photo/File)





Shaunae Miller-Uibo from the Bahamas reacts after winning the women's 200m race, during the Weltklasse IAAF Diamond League international athletics meeting in the stadium Letzigrund in Zurich, Switzerland, Thursday, August 29, 2019. (Photo by Ennio Leanza/Keystone via AP Photo)





Pit crew inspect the damaged car of Mercedes driver Lewis Hamilton of Britain after Hamilton hit a barrier during the third practice session ahead of the Belgian Formula One at Spa-Francorchamps, Belgium, Saturday, August 31, 2019. The Belgian Formula One race will take place on Sunday. (Photo by Francisco Seco/AP Photo)





Baltimore Ravens' Sam Koch holds the ball for United States soccer player Carli Lloyd as she attempts to kick a field goal after the Philadelphia Eagles and the Baltimore Ravens held a joint NFL football practice in Philadelphia, Tuesday, August 20, 2019. (Photo by Matt Rourke/AP Photo)





Southern California quarterback JT Daniels is carted off the field after being injured during the first half of an NCAA college football game against Fresno State Saturday, August 31, 2019, in Los Angeles. (Photo by Mark J. Terrill/AP Photo)





Fluminense's Pablo Dyego (C) vies for the ball with Corinthians' Vagner Love (R) during the Copa Sudamericana soccer match between Brazilian teams Fluminense and Corinthians at Maracana stadium in Rio de Janeiro, Brazil, 29 August 2019. (Photo by Antonio Lacerda/EPA/EFE)





Portuguese surfer Frederico Morais competes on the second day of the 2019 Tahiti Pro at Teahupoo, Tahiti, on August 25, 2019. (Photo by Brian Bielmann/AFP Photo)





In this handout image provided by Red Bull, Jacqueline Valente of Brazil dives from the 21 metre platform on Stari Most during the first training session of the sixth stop of the Red Bull Cliff Diving World Series on August 22, 2019 at Mostar, Bosnia and Herzegovina. (Photo by Dean Treml/Red Bull via Getty Images)





Latvia's Lina Muze competes in the Women Javelin Throw during the IAAF Diamond League competition on August 29, 2019, in Zurich, Switzerland. (Photo by Stefan Wermuth/AFP Photo)