LONDON — The U.S. women’s 400-meter relay team of Tianna Madison, Allyson Felix, Bianca Knight and Carmelita Jeter broke the nearly 27-year-old world record in the event Friday night, putting together a spectacular sequence and winning in 40.82 seconds.
That gave Felix, the 200-meter champion, her second gold of the Games while Jeter now has a full set of medals, having won silver in the 100 and bronze in the 200 before anchoring the gold medal-winning relay on Friday.
