Usain Bolt of Jamaica crosses the finish line to win gold in the men's 4x100 metres relay final ahead of Mike Rodgers of the United States at the 2015 World Athletics Championships in Beijing.
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The Jamaican relay team (L-R) Nickel Ashmeade, Asafa Powell,Usain Bolt and Nesta Carter pose for photographers after winning the final of the men's 4x100 metres relay event.
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Bolt has now won 11 gold medals at World Athletics Championships, including three in Beijing this week.
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The Jamaican relay team celebrate by taking selfies with fans.
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Bolt had already seen off Justin Gatlin to land the 200m title in Beijing Thursday.
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Bolt recorded a time of 19.55 seconds to beat Gatlin, who finished second in 19.74s.
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"There was never a doubt that I would win this one," Bolt, who won the 100m title Sunday, said after the race. "I'm number one."
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Gatlin had to settle for his second silver medal of the 2015 World Athletics Championships after missing out to Bolt in the 100m final as well.
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The best home video ever? Bolt records the medal ceremony during which he's given the gold he won in the men's 100 meter at the 2015 World Championships in Beijing.
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Bolt beat his rival Gatlin by one 100th of a second Sunday. Gatlin was the pre-race favorite and has ran the fastest time this year, but he is a divisive figure due to his previous bans for doping offenses.
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The taste of success is nothing new to Bolt, who made it nine World Championship gold medals with his triumph on Sunday.
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Bolt of Jamaica won in the Men's 100m final at the World Athletics Championships Beijing 2015 Sunday with a time of 9.79 seconds.
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Victory in Beijing means Bolt holds on to his tag as the world's fastest man.
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Bolt may be the fastest but he is just one sprinter off a conveyor belt of talents to come from Jamaica.
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The secret to his speed and that of his countrymen and women, says Bolt, is the level of internal competition.
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The reason behind the Caribbean island's success appears to be down to the sprint system for budding athletes from day one.
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Bolt arrived in Beijing as defending triple world champion having won his 100 meter gold in Moscow two years ago under the backdrop of lightning.
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But his career high - at least in speed terms - was at the Worlds in 2009 where he set a 100m world record of 9.58 seconds.
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He subsequently shattered Michael Johnson's 200m record at the same championships with a time of 19.19 seconds.
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Bolt has been coached to the top by Glen Mills, a key figure in shaping the sprint talent that Jamaica has to offer.
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Bolt appeared to be struggling this season with form and fitness but won the Anniversary Games 100m in a time of 9.87 seconds.
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It brought with it the trademark "Lightning Bolt" celebration.