Usain Bolt seals gold medal for Jamaica in Olympics 400m relay
Gold medalists Nesta Carter, Michael Frater, Usain Bolt and Yohan Blake of Jamaica pose on the podium during the medal ceremony for the Men's 4 x 100m Relay
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Jamaica won the Olympic gold medal in the men's 400-meter relay Saturday with a world record time of 36.84.
The United States equaled that old record of 37.04 while finishing second, but still finished two-tenths of a second behind the Jamaicans.
Trinidad & Tobago took the bronze medal after Canada was disqualified for passing the baton outside the zone.
Bolt finished his Olympics by sweeping the 100, 200 and 400-meter relay gold medals for the second straight Games.