Daniil Medvedev of Russia wins the U.S. Open men's singles title in New York, U.S., September 12, 2021. /CFP

Novak Djokovic of Serbia smashes his racket on the court after losing a point to Daniil Medvedev (not pictured) of Russia during their U.S. Open men's singles final in New York, U.S., September 12, 2021. /CFP

Russia's Daniil Medvedev (R) greets Serbia's Novak Djokovic at the net after winning the U.S. Open men's singles final in New York, U.S., September 12, 2021. /CFP

Novak Djokovic (L) of Serbia wipes away tears after failing to capture his fourth U.S. Open title and men's record 21st career grand slam trophy in New York, U.S., September 12, 2021. /CFP

Britain's 18-year-old Emma Raducanu holds tight her maiden U.S. Open trophy in New York, U.S., September 11, 2021. She is the first British woman to win a major singles title since Virginia Wade at Wimbledon in 1977 and the first qualifier to win a major singles title with an unbeaten history of 20 sets. /CFP

Emma Raducanu of Britain lunges to return the ball during the U.S. Open women's singles final in New York, U.S., September 11, 2021. /CFP

Zhuang Shuai (L) of China and Samantha Stosur of Australia hoist the trophy after winning the U.S. Open women's doubles title in New York, U.S., September 12, 2021. /CFP

Zhuang Shuai (R) of China and Samantha Stosur of Australia ready to hit the ball back against American duo Coco Gauff and Catherine McNally (not pictured) during the U.S. Open women's doubles final in New York, U.S., September 12, 2021. /CFP

Joe Salisbury (L) of Britain and teammate Rajeev Ram of the United States lift their U.S. Open men's doubles trophy in New York, U.S., September 10, 2021. /CFP

Bruno Soares of Brazil and his son Noah embrace after the U.S. Open men's doubles final in New York, U.S., September 10, 2021. /CFP

American-British duo Desirae Krawczyk (R) and Joe Salisbury celebrate winning the U.S. Open mixed doubles final in New York, U.S., September 11, 2021. /CFP

Joe Salisbury (L) of Britain returns the ball alongside American teammate Desirae Krawczyk as they play against Giuliana Olmos of Mexico and Marcelo Arevalo of El Salvador (not pictured) during the U.S. Open mixed doubles final in New York, U.S., September 11, 2021. /CFP

Diede de Groot wins the U.S. Open women's wheelchair title on September 12, 2021, as the 24-year-old Dutch woman completes the Golden Slam, which means winning all four majors and the gold medals in the same year. /CFP

Shingo Kunieda of Japan reaches out to hit the ball en route to winning the U.S. Open wheelchair men's singles title in New York, U.S., September 12, 2021. /CFP

Canada's 19-year-old Leylah Fernandez celebrates after defeating Elina Svitolina (not pictured) of Ukraine during the U.S. Open women's quarterfinal match in New York, U.S., September 7, 2021. /CFP

Oscar Otte of Germany falls over the net during his match against Matteo Berrettini (not pictured) of Italy during the fourth-round match in New York, September 6, 2021. /CFP