Athing Mu wins the final in the women's 800-meter run at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Sydney McLaughlin reacts after setting a new world record in the finals of the women's 400-meter hurdles at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Noah Lyles celebrates after winning the final in the men's 200-meter run at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Annie Kunz cools off with a fan after the heptathlon javelin throw at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Winner, Paul Chelimo leads the pack in the finals of men's 5000-meter run at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)

JuVaughn Harrison competes during the finals of the men's high jump at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)

JuVaughn Harrison celebrates during the finals of the men's high jump at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)

Cole Hocker celebrates after winning the final in the men's 1500-meter run at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

JuVaughn Harrison competes during the finals of the men's long jump at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)

Taliyah Brooks is helped off track after collapsing during the heptathlon at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. Events were suspended due to high temperatures. (AP Photo/Charlie Riedel)

Shelby McEwen celebrates after the finals of the men's high jump at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)

Paul Chelimo celebrates after beating Grant Fisher and Woody Kincaid in the finals of men's 5000-meter run at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Paul Chelimo celebrates after his win in the finals of men's 5000-meter run at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Paul Chelimo, left, celebrates with Grant Fisher after winning the finals of men's 5000-meter run at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Heat waves come off the track as Annie Kunz walks to the heptathlon long jump at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Noah Lyles celebrates after winning the final in the men's 200-meter run at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Ashley Landis)

Sydney McLaughlin sets a new world record in the finals of the women's 400-meter hurdles at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore.(AP Photo/Ashley Landis)

JuVaughn Harrison celebrates during the finals of the men's high jump at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)

Noah Lyles reacts after winning the final in the men's 200-meter run at the U.S. Olympic Track and Field Trials Sunday, June 27, 2021, in Eugene, Ore. (AP Photo/Charlie Riedel)