American teenager Missy Franklin set a world record in the 200 backstroke Friday for her third gold and fourth medal overall at the London Olympics.
Franklin clocked 2 minutes, 4.06 seconds, 0.75 quicker than the mark set by Kirsty Coventry of Zimbabwe at the 2009 world championships in Rome in a now-banned bodysuit.
It was the seventh world record of the games.
Anastasia Zueva of Russia touched in 2:05.92 to take the silver medal and Elizabeth Beisel of the United States finished in 2:06.55 to take bronze.
American 15-year-old Katie Ledecky also won the 800-meter freestyle at the London Olympics on Friday.
The youngest member of the U.S. swim team narrowly missed a world record in the grueling race, falling off pace on the last lap and finishing in 8 minutes, 14.63 seconds.
Mireia Belmonte Garcia of Spain touched in 8:18.76 to take the silver medal and defending champion Rebecca Adlington of host Britain finished in 8:20.32 for bronze.
Adlington set the world record of 8:14.10 at the 2008 Beijing Games.
