PHOTOS: Usain Bolt inspire jamaica to win the 4x100m relay

Usain Bolt put an exclamation point on his performance at the London Olympics with another gold medal and another world record.
Running the anchor leg in the men's 4x100-meter relay, Bolt helped the Jamaican team win the gold medal in 36.84 seconds, a new world record. Just days after declaring himself "the greatest athlete to live," the charismatic 25-year-old sprinter went back to work bolstering his argument.
Bolt received the baton from teammate Yohan Blake and then left behind Ryan Bailey of the United States to reach the finish line ahead of the field. The United States won the silver in 37.04 seconds, a new national record. Canada finished the race third but was disqualified, giving the bronze to Trinidad and Tobago.
Nesta Carter ran the opening leg for Jamaica, followed by Michael Frater. Neither sprinter had previously competed during the London Games. The two runners who next carried the baton for Jamaica, however, have made frequent appearances on the medal stand: Blake and Bolt.
Blake finished runner-up to Bolt in the 100 meters and 200 meters before running up behind him during the relay with the baton. After a clean transition, Bolt blew open what had been a tight race between the U.S. runners and Jamaica.
Trell Kimmons led off for the U.S. team, making his first appearance of the Games. He was followed by Justin Gatlin and Tyson Gay, who both finished behind Bolt and Blake in the 100. When Gay passed the baton to Bailey, the United States was running neck and neck with Jamaica but the long strides of the 6'5" Bolt opened up a gap along that final straightaway. The U.S. time of 37.04 seconds matches the previous world record set by Jamaica at the last Olympics, a mark smashed by Jamaica in 2012. In 2008, Bolt ran the third leg as the quartet of Jamaican sprinters set that standard.
Having won gold in the 100 meters, 200 meters and the 4x100-meter relay in London, Bolt has pulled off an unprecedented double triple, successfully defending each of the three gold medals that he won at the Beijing Games in 2008.