Dressel, Ledecky lead chase for Olympic berths at US trials

FILE - In this April 8, 2021, file photo Caeleb Dressel competes in the men's 100 meter butterfly prelim at the TYR Pro Swim Series swim meet in Mission Viejo, Calif. (AP Photo/Ashley Landis, File)

FILE - In this April 9, 2021, file photo, Lilly King competes in the women's 100-meter breaststroke at the TYR Pro Swim Series swim meet in Mission Viejo, Calif. King won the final. (AP Photo/Ashley Landis, File)

FILE - In this July 31, 2019, file photo, Ryan Lochte competes in the men's 200-meter individual medley time trial at the U.S. national swimming championships in Stanford, Calif. (AP Photo/David J. Phillip, File)

FILE - In this July 27, 2019, file photo, United States' Simone Manuel starts a heat of the women's 50-meter freestyle at the World Swimming Championships in Gwangju, South Korea. (AP Photo/Mark Schiefelbein, File)

FILE - In this April 11, 2021, file photo, Katie Ledecky competes in the women's 1500-meter freestyle final at the TYR Pro Swim Series swim meet in Mission Viejo, Calif. Ledecky finished first. (AP Photo/Ashley Landis, File)