Runners compete in a heat of the 4 x 400-meter mixed relay at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Charlie Riedel)

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)

Shelly-Ann Fraser-Pryce, of Jamaica, Ajla Del Ponte, of Switzerland, Nzubechi Nwokocha, of Nigeria, and Gina Bass, of Gambia, compete during the first round of the women's 100-meter the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Morry Gash)

Athing Mu, of United States, wins a heat in the women's 800-meter run at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Martin Meissner)

Selemon Barega, of Ethiopia, celebrates after winning the men's 10,000-meter run at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Charlie Riedel)

Shelly-Ann Fraser-Pryce, of Jamaica, 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)

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)

Habitam Alemu, of Ethiopia, and Athing Mu, of United States, head to the finish competes during the first round of the women's 800-meter at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Morry Gash)

Julien Wanders, of Switzerland, collapses after running in the men's 10,000-meter finals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Morry Gash)

Tatsuhiko Ito, of Japan, reacts after running in the men's 10,000-meter finals at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Morry Gash)

Selemon Barega, of Ethiopia, celebrates after winning the men's 10,000-meters final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Matthias Schrader)

Juvaughn Harrison, of United States, competes in the preliminary round of the men's high jump at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Matthias Schrader)

Athing Mu, of United States, wins a heat in the women's 800-meter run at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Charlie Riedel)

Elaine Thompson-Herah, of Jamaica, wins a heat in the women's 100-meter run at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo. (AP Photo/Charlie Riedel)