London, England (Sports Network) - Missy Franklin became the first American female to swim in seven Olympic events, leading off in a record-setting win by the U.S. in the women's 400-meter medley relay Saturday night.
Franklin, Rebecca Soni, Dana Vollmer and Allison Schmitt swam the race in 3 minutes, 52.05 seconds to take .14 seconds off China's old world record from 2009.
Franklin, 17, swam the leadoff backstroke laps and won her fifth medal in London, including four golds to cement her place as the new young star in U.S. swimming.
The U.S. swimmers in the relay combined to win 16 medals here, some of them overlapping.
"I honestly couldn't think of a better way to end it, that was so perfect in every way," Franklin said. "It was the most fun relay I've ever been on. ... Every single team in the ready room tonight was laughing and joking."
Australia ended 1.97 seconds back in second place and Japan was third.
08/04 19:11:42 ET