Lani Pallister has shaved 10 seconds off her personal best in the 800m freestyle this year. Can she do the unthinkable and down Katie Ledecky at a home Olympics?

Australian Kaylee McKeown and American Regan Smith went one-two in the 200m backstroke, just as they did in all three backstrokes at the 2023 Worlds, both backstrokes at the 2024 Olympics and in the 100m back earlier at these worlds.

Ledecky, trailing McIntosh at the 700-meter mark, surged ahead on the final lap, fending off a hard-charging Pallister as McIntosh faded in the closing meters. With the win, Ledecky remained undefeated in the 800-meter freestyle finals event on the world stage dating back to 2012.