Muhammad Shah Firdaus Sahrom, of Malaysia, and Sergey Ponomaryov, of Kazakhstan, crash during the track cycling men’s keirin race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Kwesi Browne of Team Trinidad And Tobago reacts during the track cycling men's keirin race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Tianshi Zhong of Team China adults her helmet as she readies to compete during the track cycling women's sprint race at the 2020 Summer Olympics, Friday, Aug. 6, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

A member of Team Denmark celebrates winning the gold medal, with Team Germany in background, during the track cycling men's madison race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Wai Sze Lee of Team Hong Kong waits for the start of the competes during the track cycling women's sprint race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Athletes compete during the track cycling men's madison race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Athletes compete during the track cycling men's madison race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Members of Team Denmark celebrate winning the gold medal during the track cycling men's madison race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Mathilde Gros of Team France and Lauriane Genest of Team Canada, behind, compete during the track cycling men's keirin race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Members of Team Denmark celebrate winning the gold medal during the track cycling men's madison race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan.(AP Photo/Christophe Ena)

Athletes compete during the track cycling men's keirin race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Muhammad Shah Firdaus Sahrom of Team Malaysia shows injuries after crashing in the track cycling men's keirin race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Harrie Lavreysen of Team Netherlands competes during the track cycling men's keirin race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

A member of Team France competes during the track cycling men's madison race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

A member of Team United States lies on the track after crashing during the track cycling men's madison race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Harrie Lavreysen of Team Netherlands competes during the track cycling men's keirin race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Team Spain competes during the track cycling men's madison race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Tianshi Zhong of Team China, right, and Ellesse Andrews of Team New Zealand compete during the track cycling women's sprint race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan (AP Photo/Thibault Camus)

Sam Webster of Team New Zealand competes during the track cycling men's keirin race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Wai Sze Lee of Team Hong Kong and Katy Marchant of Team Britain compete during the track cycling women's sprint race at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Izu, Japan. (AP Photo/Christophe Ena)