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Rebecca Soni held the world record in the 4×100-meter medley relay from 2012 to 2017. This record was set at the 2012 Summer Olympics in London, where Soni swam the breaststroke leg of the relay. The team's time of 3:52.05 was a new world record and helped the United States win the gold medal. Soni's record stood for five years until it was broken by the Australian team in 2017.