Alise Willoughby of the United States competes in the women's BMX Racing quarterfinals at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

FILE - In this Aug. 10, 2012, file photo, Australia's Sam Willoughby celebrates winning the silver medal after the men's BMX cycling event during the 2012 Summer Olympics in London. Sam and Alise, both BMX rideres, have been through a series of life-altering moments in a short period of time. The navigated their way through them together and will be ready for the next one-- if it comes. (AP Photo/Christophe Ena, File)

Alise Willoughby of the United States competes in the women's BMX Racing quarterfinals at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)

Alise Willoughby of the United States, center, and Sae Hatakeyama of Japan, left, compete in the women's BMX Racing quarterfinals at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Ben Curtis)