The three-time Olympian is going for a fourth appearance at the Summer Games this year in Paris. Here's how she's doing on Day 1 of the trials.
She swam 400 meters in 3:58.35, touching the wall to joyous cheers, and qualified for Paris 2024.
Gretchen Walsh set a world record in the women's 100-meter butterfly Saturday night, posting a time of 55.18 seconds in a semifinal heat at the U.S. Olympic swimming trials.