Veronica Campbell-Brown scorched to victory in the Olympic 200 metres on Thursday to retain her title and complete a Jamaican sweep of all four men and women's sprint titles at the Games.
The 26-year-old, the fastest woman over the distance this year, started well and ran a career best 21.74 seconds to beat American Allyson Felix into second place for a second successive Olympics.
World champion Felix held off another Jamaican, Kerron Stewart, with a late surge to win silver in 21.93. Stewart crossed the line in 22.0 to win her second medal of the Games after finishing joint second in the 100m.
Usain Bolt completed the men's sprint double on Wednesday after Shelly-Ann Fraser had led a Jamaican sweep in the women's 100m.
The Americans return home without a men or women's sprint title for the first time since they boycotted the 1980 Moscow Games.
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