American Kate Douglass breaks 50m freestyle world record twice in one day

• American clocks 23.19sec to win final at Pan Pacs

• Douglass had first broken record with 23.49sec in heats

Kate Douglass lowered her own world record in the women's 50m freestyle for the second time in one day, winning the Pan Pacific Championships final in 23.19sec.

In the morning preliminaries, the 24-year-old American swam 23.49 to take the mark away from teammate Gretchen Walsh, who finished second in the evening final in 23.74. Australia's reigning world champion Meg Harris was third in 23.89.