The women’s 4×100 metre medley relay took place on 20–21 August at the Olympic Aquatic Centre of the Athens Olympic Sports Complex in Athens Greece.The Australians reinforced their claim to become the strongest women’s team in the world with a convincing triumph over their American rivals in the event. Giaan Rooney Leisel Jones Petria Thomas and Jodie Henry broke almost a full second off the world record set by Team USA in 2000 stopping the clock at 3:57.32.