[Sohel]

LONDON — Pointing the baton at the clock showing the world-record time of 40.82 seconds, Carmelita Jeter anchored the United States on Friday night to its first Olympic gold medal in the women's 4x100-meter relay since 1996.

Tianna Madison, 200-meter champion Allyson Felix and Bianca Knight gave the U.S. a big lead heading into the anchor leg by Jeter, who already owned a silver medal from the 100 and a bronze from the 200 in London.

Their final time cut more than a half-second off the old record of 41.37 run by East Germany in 1985.

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