Kate Douglass set the women's 50m freestyle world record twice on the same day at the Pan Pacific Championships. The American first clocked 23.49 seconds in the morning heats, breaking the previous mark. She then lowered it again in the evening final, winning with a time of 23.19 seconds.

Douglass, 24, took the record from teammate Gretchen Walsh, who placed second in the final with 23.74 seconds. Australia's Meg Harris, the reigning world champion, finished third in 23.89 seconds.