(CNN) -- Usain Bolt claimed an historic victory in the 200 meters at the London Olympics Thursday as he completed the sprint double for the second time.
Bolt became the first man in Games history to defend both the 100 and 200 meters titles he won in such convincing style at the 2008 Olympics in Beijing.
His teammate and training partner Yohan Blake chased him all the way up the finishing straight to claim the silver medal.
Warren Weir completed a one-two-three for Jamaica in a personal best time of 19.84 seconds.
Bolt was just outside his own world record with a winning time of 19.32 seconds, while Blake clocked 19.44 seconds.
Wallace Spearmon was fourth for the United States.
Photo by Getty Images
An epic night was kick started by a sensational victory in the men's 800m for David Rudisha of Kenya.
Rudisha ran one minute 40.91 seconds to break his own world record, the first in the track and field events at the Games.
The 23-year-old led from start to finish and was never seriously challenged, despite a superb run by 18-year-old silver medalist Nijel Amos of Botwana.
Amos clocked one minute 41.73 seconds, matching the former world record time set by London Games chief Sebastian Coe back in 1981, which stood for 16 years.
Another teenager, 17-year-old Timothy Kitum of Kenya took the bronze in one minute 42.53 seconds.
Rudisha, who was inspired by Coe's exploits, had promised him something special and did not disappoint.
"I was well prepared and had no doubt about winning," he told BBC Sport.
"I was waiting for perfect conditions to break the record and decided to go for it," he added.
The qualifiers for the final of the women's 800 meters were led by gender row athlete Caster Semenya of South Africa.
Semenya showed the form that took her to the world championship in 2009 in Berlin, easing up to win in one minute 57.67 seconds.
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