American superstar swimmer Katie Ledecky grabbed her second gold medal of this year's Olympic Games, winning the women's 800-meter freestyle race Saturday in Tokyo.

Driving the news: Ledecky, who holds the world record in the 800m freestyle, is considered one of the best women swimmers of all time. Earlier this week, she snagged gold in the first-ever women's 1500m freestyle and took home silver medals in the 400m freestyle and the 4x2100m freestyle relay.

The big picture: Australia's Ariarne Titmus won the 800m freestyle silver and Italy's Ariarne Titmus took bronze.