Daniil Medvedev, of the Russian Olympic Committee, pauses during a third round men's tennis match against Fabio Fognini, of Italy, at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo, Japan. (AP Photo/Patrick Semansky)

Adam Helcelet, of the Czech Republic, cools down with ice during the high jump of the decathlon at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Tokyo. (AP Photo/Matthias Schrader)

Temperature on the field during the athletics at the 2020 Summer Olympics, Sunday, Aug. 1, 2021, in Tokyo. (AP Photo/Matthias Schrader)

Runners compete in the women's marathon at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Sapporo, Japan (AP Photo/Shuji Kajiyama)

Peres Jepchirchir, of Kenya, celebrates as she crosses the finish line to win the women's marathon at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Sapporo, Japan (AP Photo/Shuji Kajiyama)

President of the International Olympic Committee, Thomas Bach, left, walks with former Olympic champion Sebastian Coe at the women's marathon at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Sapporo, Japan. (AP Photo/Shuji Kajiyama)

Dorian Coninx of France takes water as a volunteer holds out a bag of ice, during the run portion of the men's individual triathlon at the 2020 Summer Olympics, Monday, July 26, 2021, in Tokyo, Japan. (AP Photo/Jae C. Hong)