LONDON - USA set a world record of 3:52.05 seconds to win the gold medal in the women's 4x100 metres medley relay at the London Olympics on Saturday.

Backstroker Missy Franklin, breaststroker Rebecca Soni, butterflyer Dana Vollmer and freestyler Allison Schmitt teamed up to wipe 0.14 seconds off the previous record China set at 2009 Worlds in Rome.

World record evolution (Time, Team/Nationality, Place, Date):
3:52.05 United States USA London 04.08.12
3:52.19 China CHN Rome 01.08.09
3:52.69 Australia AUS Beijing 17.08.08
3:55.74 Australia AUS Melbourne 31.03.07
3:56.30 Australia AUS Melbourne 21.03.06
3:57.32 Australia AUS Athens 21.08.04