London 2012 Olympics: Opening Weekend

- 2012-07-30T12:03:12Z

Photograph by by Jamie Squire/Getty Images

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Dana Vollmer

U.S. swimmer Dana Vollmer won the Olympic women's 100-meter butterfly gold medal in a world record time of 55.98 seconds, beating the mark set by Sweden's Sarah Sjostrom in Rome in 2009, on July 29.

China's Ying Lu finished second, with Alicia Coutts of Australia taking the bronze.