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Published on Jul 28, 2012
Dana Vollmer of the United States set the fastest qualifying time in the heats of the women's 100 metres butterfly on the opening day of the Olympic swimming competition on Saturday.
The reigning world champion broke Inge de Bruijn's 12 year old Olympic record of 56.61 when she sailed through her heat in 56.25 seconds, almost a second ahead of her nearest rival, China's Lu Ying 57.17.