FILE - In this Friday, Aug. 9, 2019 file photo, Nathan Adrian of United States competes in men's swimming 50m freestyle at the Pan American Games in Lima, Peru. Adrian is competing in the Olympic trials in Omaha, Neb., Sunday, June 13, 2021 (AP Photo/Fernando Llano, File)

FILE - In this , Thursday, June 30, 2016, file photo, Anthony Ervin celebrates after swimming in the men's 100-meter freestyle final at the U.S. Olympic swimming trials in Omaha, Neb. Ervin is competing in the Olympic trials in Omaha, Neb., Sunday, June 13, 2021 (AP Photo/Mark J. Terrill, File)

FILE - In this Sunday, April 11, 2021 file photo, Matt Grevers dives in to the pool at the start of the men's 100-meter freestyle final at the TYR Pro Swim Series swim meet in Mission Viejo, Calif. (AP Photo/Ashley Landis, File)

FILE - In this Friday, June 29, 2012 file photo, Amanda Weir waits for the results after swimming in the women's 100-meter freestyle preliminaries at the U.S. Olympic swimming trial in Omaha, Neb. Amanda Weir just can't bring herself to say the R-word. Retirement. (AP Photo/Mark Humphrey, File)

FILE - In this April 8, 2021, file photo, Ryan Lochte pauses after competing in the men's 200-meter freestyle preliminary race at the TYR Pro Swim Series swim meet in Mission Viejo, Calif. Lochte, the swimmer who embarrassed himself and the U.S. five years ago in Rio de Janeiro, is seeking to make a record-tying Olympic team. (AP Photo/Ashley Landis, File)