Kate Douglass won gold in the women's 50-meter freestyle at the Pan Pacific Swimming Championships in Irvine, California.
Douglass first set a world record in the event during the preliminary heats. She then surpassed her own mark with a blazing swim in the evening final on Saturday.
The American clocked a stunning 23.19 seconds to secure the victory. This time improved upon the previous world mark of 23.55 seconds set by fellow-American Gretchen Walsh on June 18.