Emma Mckeon, of Australia, puts on her gold medal during a victory ceremony for the women's 50-meter freestyle final at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Jae C. Hong)

Simone Biles, of the United States, waits to perform on the vault during the artistic gymnastics women's final at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. The American gymnastics superstar has withdrawn the all-around competition to focus on her mental well-being. (AP Photo/Gregory Bull)

Kelly Claes, right of the United States, and teammate Sarah Sponcil converge to return a shot during a women's beach volleyball match against Canada at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Felipe Dana)

Charlotte Worthington of Britain competes in the women's BMX freestyle final at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Caeleb Dressel, of the United States, celebrates after winning the gold medal in the men's 50-meter freestyle final at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Jae C. Hong)

Alexander Zverev, of Germany, reacts after defeating Karen Khachanov, of the Russian Olympic Committee, in the men's single gold medal match of the tennis competition at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

Bingtian Su, of China, reacts after winning a semifinal of the men's 100-meters at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Charlie Riedel)

Caeleb Dressel, of the United States, dives off the starting block in the men's 50-meter freestyle final at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/David Goldman)

Emma Mckeon, of Australia, dives off the starting block in the women's 50-meter freestyle final at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Jae C. Hong)

CORRECTS LAST NAME TO SCHAUFFELE FROM SHAUFFELE - Xander Schauffele of the United States watches his tee shot on the 6th hole during the final round of the men's golf event at the 2020 Summer Olympics on Sunday, Aug. 1, 2021, in Kawagoe, Japan. (AP Photo/Matt York)

Nicholas Lucena, center, of the United States, takes a shot as Cherif Younousse, left, of Qatar, and teammate Ahmed Tijan defend during a men's beach volleyball match at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Felipe Dana)

Slovenia's Luka Doncic celebrates at the end of a men's basketball preliminary round game against Spain at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Saitama, Japan. (AP Photo/Charlie Neibergall)

Rebeca Andrade of Brazil, performs on the vault during the artistic gymnastics women's apparatus final at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Gregory Bull)

Rebeca Andrade of Brazil, poses after winning the gold medal in vault during the artistic gymnastics women's apparatus final at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Ashley Landis)

Nina Derwael of Belgium, performs on the uneven bars during the artistic gymnastics women's apparatus final at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Natacha Pisarenko)

Lamont Marcell Jacobs, of Italy celebrates after winning the gold medal in the final of the men's 100-meters at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo, Japan. (AP Photo/Martin Meissner)

Lamont Jacobs, right, of Italy, wins the men's the 100-meter final at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo. (AP Photo/David J. Phillip)