US set world record, claim women's 4x100m medley relay gold

The United States set a world record of three minutes and 50.40 seconds in the women's 4x100m medley relay final at the world championships on Sunday.

The quartet of Regan Smith, Lilly King, Kelsi Dahlia and Simone Manuel helped the USbetter their own world record of 3:51.55 en route to the 2017 world title in Budapest.

In the lead-off leg, Smith set a backstroke world record of 57.57 seconds.

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Australia (3:53.42) took silver, while Canada (3:53.58) took bronze.