Ledecky makes fourth Olympics; Walsh sets WR
![Ledecky makes fourth Olympics; Walsh sets WR](https://a.espncdn.com/photo/2024/0616/r1346357_600x600_1-1.jpg)
Katie Ledecky is heading to her fourth Olympics, cruising to victory in the 400-meter freestyle at the U.S. swimming trials on Saturday night, while Gretchen Walsh set a world record in the 100 butterfly.