Simone Manuel and Nathan Adrian own a combined 44 Olympic and world championships medals. Their Tokyo fates should come down to fractions of a second on the final day of U.S. Olympic Swimming Trials on Sunday.
Manuel and Adrian must finish in the top two of their 50m freestyle finals in Omaha to qualify for the U.S. team.
Each failed to make the final of the 100m free, which Adrian won by .01 at the London Olympics and Manuel tied for gold at the Rio Games, becoming the first U.S. Black female swimmer to take individual gold.