Marie-Josee Ta Lou, of the Ivory Coast, wins a heat in the women's 100-meter run at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Martin Meissner)

Medics prepare to carry away on a stretcher Connor Fields of the United States after he crashed at the first bend in the men's BMX Racing semifinals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Novak Djokovic, of Serbia, falls down while returning a ball during a mixed doubles semifinals of the tennis competition at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

Lisa Roman, Kasia Gruchalla-Wesierski, Christine Roper, Andrea Proske, Susanne Grainger, Madison Mailey, Sydney Payne, Avalon Wasteneys and Kristen Kit of Canada celebrate winning the gold medal in the women's rowing eight final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Lee Jin-man)

Tatjana Schoenmaker, of South Africa, celebrates after winning the gold medal in the women's 200-meter breaststroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Gregory Bull)

Tatjana Schoenmaker, of South Africa, competes in the women's 200-meter breaststroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Jae C. Hong)

Marie-Josee Ta Lou, of the Ivory Coast, wins a heat in the women's 100-meter run at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Petr David Josek)

Shelly-Ann Fraser-Pryce, of Jamaica, runs in her heat of the women's 100-meters at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Matthias Schrader)

The United States' Ryan Murphy, right, gives a thumbs up to Evgeny Rylov, of Russian Olympic Committee, after Rylov won the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/David Goldman)

Evgeny Rylov, of Russian Olympic Committee, white cap, dives off the starting block to swim in the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/David Goldman)

United States' A'Ja Wilson (9), left, shoots over Japan's Monica Okoye (99), right, during women's basketball preliminary round game at the 2020 Summer Olympics, Friday, July 30, 2021, in Saitama, Japan. (AP Photo/Charlie Neibergall)

April Ross, of the United States, dives for the ball during a women's beach volleyball match against the Netherlands at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Felipe Dana)

Novak Djokovic, of Serbia, reacts during a semifinal men's tennis match against Alexander Zverev, of Germany, at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Patrick Semansky)

Lynna Irby of the United States wipes a tear away after the 4 x 400-meter mixed relay at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Petr David Josek)