Dana Vollmer was the wire-to-wire winner at the 100 meter butterfly. She won her original heat in Olympic record time, cruised through the semifinal, then helped the United States win their first individual gold in women's swimming when she broke the world record in tonight's final at the London Aquatics Centre. Vollmer's time of 55.98 seconds broke the old record of 56.06 seconds by Sarah Sjöström of Sweden.

Vollmer finished with the first sub-56 second time in women's 100 meter butterfly history. The former Golden Bear gives Cal their first gold medal of these Olympics, and their third medal in swimming, joining Jessica Hardy and Natalie Coughlin who won bronze in their relay.

Talk about Vollmer with Cal fans by heading on over to the California Golden Blogs.

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