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 [ Images ].

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 [ Images ] 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 [ Images ] Games.