Braspennincx, Walls win track cycling gold at Tokyo Games
Athletes compete during the track cycling men's omnium tempo race at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Athletes compete during the track cycling men's omnium tempo race at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Aug. 05, 2021 04:48 AM EDT
Kelsey Mitchell of Team Canada (105) and Liubov Basova of Team Ukraine (228) compete during the track cycling women keirin at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Kelsey Mitchell of Team Canada (105) and Liubov Basova of Team Ukraine (228) compete during the track cycling women keirin at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Aug. 05, 2021 04:41 AM EDT
Athletes compete during the track cycling men's omnium elimination race at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Athletes compete during the track cycling men's omnium elimination race at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Aug. 05, 2021 05:14 AM EDT
Sam Webster of Team New Zealand and Maximilian Levy of Team Germany, behind, compete during the track cycling men's sprint race at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Sam Webster of Team New Zealand and Maximilian Levy of Team Germany, behind, compete during the track cycling men's sprint race at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Aug. 05, 2021 04:49 AM EDT
Athletes compete during the track cycling men's omnium tempo race at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Athletes compete during the track cycling men's omnium tempo race at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Aug. 05, 2021 04:31 AM EDT
Nicholas Paul of Team Trinidad And Tobago, left, and Yuta Wakimoto of Team Japan competes during the track cycling men's sprint race at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Nicholas Paul of Team Trinidad And Tobago, left, and Yuta Wakimoto of Team Japan competes during the track cycling men's sprint race at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Aug. 05, 2021 04:31 AM EDT
Shanne Braspennincx of Team Netherlands reacts after winning the gold medal for the track cycling women's keirin at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Shanne Braspennincx of Team Netherlands reacts after winning the gold medal for the track cycling women's keirin at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Aug. 05, 2021 05:42 AM EDT
Shanne Braspennincx of Team Netherlands crosses the line to win the gold medal as Ellesse Andrews of Team New Zealand, left, wins silver and Lauriane Genest of Team Canada wins bronze, during the track cycling women's keirin at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Shanne Braspennincx of Team Netherlands crosses the line to win the gold medal as Ellesse Andrews of Team New Zealand, left, wins silver and Lauriane Genest of Team Canada wins bronze, during the track cycling women's keirin at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Aug. 05, 2021 05:42 AM EDT
Katy Marchant of Team Great Britain crashes with Laurine van Riessen of Team Netherlands (188) during the track cycling women keirin at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Katy Marchant of Team Great Britain crashes with Laurine van Riessen of Team Netherlands (188) during the track cycling women keirin at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Christophe Ena)

Aug. 05, 2021 04:22 AM EDT
Sam Webster of Team New Zealand, left, and Sebastien Vigier of Team France compete during the track cycling men's sprint at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Sam Webster of Team New Zealand, left, and Sebastien Vigier of Team France compete during the track cycling men's sprint at the 2020 Summer Olympics, Thursday, Aug. 5, 2021, in Izu, Japan. (AP Photo/Thibault Camus)

Aug. 05, 2021 04:49 AM EDT