Competitors stand for the national anthem before the prelims of the women's pole vault the U.S. Olympic Track and Field Trials Thursday, June 24, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)tonal at the

Emma Coburn celebrates after winning the women's 3000-meter steeplechase at the U.S. Olympic Track and Field Trials Thursday, June 24, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Jessica Ramsey, left, celebrates her first place finish with second place, Jessica Ramsey after the finals of the women's shot put at the U.S. Olympic Track and Field Trials Thursday, June 24, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Sha'Carri Richardson greets fans after winning the women's 100-meter run at the U.S. Olympic Track and Field Trials Saturday, June 19, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)

FILE - Allyson Felix reacts to her second place in the women's 400-meter run at the U.S. Olympic Track and Field Trials in Eugene, Ore., in this Sunday, June 20, 2021, file photo. Though frequently scrutinized the way any market leader is, Nike’s stranglehold on track and field has been tested over the past few years — if not in a pure dollar-for-dollar sense, then certainly in the way it is perceived by its most fervent followers. Gender equity battles have led to the defection of several high-profile women runners, including nine-time Olympic medal winner Allyson Felix. (AP Photo/Ashley Landis, File)

Runners compete during first heat of the men's 3000-meter steeplechase at the U.S. Olympic Track and Field Trials Monday, June 21, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)

Jessica Ramsey celebrates during the finals for the women's shot put at the U.S. Olympic Track and Field Trials Thursday, June 24, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)

Raevyn Rogers wins the fifth heat in the women's 800-meter run at the U.S. Olympic Track and Field Trials Thursday, June 24, 2021, in Eugene, Ore.(AP Photo/Ashley Landis)