Barcelona striker Sergio Aguero reacts during a press conference at the Camp Nou stadium in Barcelona, Spain, Wednesday, December 15, 2021. Sergio Aguero has announced his retirement from football on Wednesday due to a heart condition. (Photo by Emilio Morenatti/AP Photo)





New York City FC goalkeeper Sean Johnson (1) drinks from the trophy after their penalty kick shootout win over the Portland Timbers in the MLS Cup soccer game, Saturday, December 11, 2021, in Portland, Ore. (Photo by Amanda Loman/AP Photo)





Red Bull's Max Verstappen and mechanics during testing at Yas Marina Circuit in Abu Dhabi, United Arab Emirates on December 14, 2021. (Photo by Hamad I Mohammed/Reuters)





A surfer rides a wave at the Praia do Norte in Nazare on December 11, 2021. (Photo by Patricia de Melo Moreira/AFP Photo)





South Korea's Shin Seungchan, playing with Lee Sohee, left, returns a shot to Japan's Aoi Matsuda and Chisato Hoshi during their Women's/ badminton doubles match at the BWF World Championships in Huelva, Spain, Wednesday, December 15, 2021. (Photo by Manu Fernandez/AP Photo)





Race winner and 2021 F1 World Drivers Champion Max Verstappen of Netherlands and Red Bull Racing celebrates with his team after the F1 Grand Prix of Abu Dhabi at Yas Marina Circuit on December 12, 2021 in Abu Dhabi, United Arab Emirates. (Photo by Lars Baron/Getty Images)





Algeria's players lift national and Palestinian flags as they celebrate their win during the FIFA Arab Cup 2021 quarter final football match between Morocco and Algeria at the Al-Thumama Stadium in the Qatari capital Doha on December 11, 2021. (Photo by Amr Abdallah Dalsh/Reuters)





Conor Benn celebrates after knocking out Chris Algieri to win the WBA Continental Welterweight Title fight at the M&S Bank Arena in Liverpool, England on Saturday, December 11, 2021. (Photo by Andrew Couldridge/Action Images via Reuters)





Manchester City's Bernardo Silva's boot comes off in action with Leeds United's Jamie Shackleton at Etihad Stadium in Manchester, Britain, December 14, 2021. (Photo by Carl Recine/Action Images via Reuters)





Mexico's Atlas players celebrate after their teammate Julio Furch scored a penalty shot against Mexico's Leon during a Mexican soccer league final match in Guadalajara, Sunday, December 12, 2021. (Photo by Eduardo Verdugo/AP Photo)





Competitors swim during a harbor race at the Victoria Harbor in Hong Kong, Sunday, December 12, 2021. Hundreds of people took part in traditional swim across iconic Victoria Harbor after two years of suspension. (Photo by Kin Cheung/AP Photo)





Red Bull driver Max Verstappen of the Netherlands kneels next to his car after he became the world champion after winning the Formula One Abu Dhabi Grand Prix in Abu Dhabi, United Arab Emirates, Sunday, December 12, 2021. (Photo by Hassan Ammar/AP Photo)





Australia's Nicholas Timmings competes in the men's Skeleton World Cup in Altenberg, eastern Germany, on December 3, 2021. (Photo by Tobias Schwarz/AFP Photo)





Pusarla Venkata Sindhu of India eyes the shuttlecock during her Woman's 2nd round badminton singles match against Martina Repiska of Slovakia at the BWF World Championships in Huelva, Spain, Tuesday, December 14, 2021. (Photo by Manu Fernandez/AP Photo)





A big wave surfer Kai Lenny from Hawaii rides a wave during the TUDOR Nazare Tow Surfing Challenge at Praia do Norte on December 13, 2021 in Nazare, Portugal. (Photo by Octavio Passos/Getty Images)





Skimboarding world champion Lucas Fink, from Brazil, falls down a wave during a big wave surfing session at Praia do Norte, or North Beach, in Nazare, Portugal, Saturday, December 11, 2021. (Photo by Armando Franca/AP Photo)





France's Johan Clarey jumps as he trains on December 16, 2021 in Val Gardena, Italian Alps, on the eve of the Men's FIS Ski World Cup Downhill event. (Photo by Tiziana Fabi/AFP Photo)





Marte Leinan Lund of Norway in action during a trial jump for the ski jumping portion for the Women's Gundersen Normal Hill HS98/5km competition of the FIS Nordic Combined World Cup in Ramsau, Austria, 17 December 2021. (Photo by Christian Bruna/EPA/EFE)





Raibu Katayama, of Japan, crashes in the halfpipe finals, Saturday, December 11, 2021, during the U.S. Grand Prix snowboarding event at Copper Mountain, Colo. (Photo by Hugh Carey/AP Photo)





Real Betis' fans throw stuffed animals to be collected and given to children in need during the Spanish league football match between Real Betis and Real Sociedad at the Benito Villamarin stadium in Seville on December 12, 2021. (Photo by Cristina Quicler/AFP Photo)





British race car driver George Russell arrive at the Yas Marina paddocks area for the Abu Dhabi Grand Prix final race of the season on December 12, 2021. (Photo by Victor Besa/The National)





In this image provided by SailGP, Australia SailGP Team helmed by Tom Slingsby compete during a practice race for the Australia Sail Grand Prix, Thursday, December 16, 2021. (Photo by Bob Martin/SailGP via AP Photo)





Russia's Yegor Korshkov, above, collides with Canada's goalie Justin Pogge during the Channel One Cup ice hockey match between Russia and Canada in Moscow, Russia, Wednesday, December 15, 2021. (Photo by Pavel Golovkin/AP Photo)





Belinda Bencic of Switzerland at the Mubadala World Tennis Championship in Abu Dhabi, United Arab Emirates on December 16, 2021. (Photo by Victor Besa/The National)