While some doubted Usain Bolt as he headed into the 2012 Summer Olympic Games, he used that doubt as fuel to hit ground with an even stronger performance. Officially the fastest man in the world, he defended his 100-meter sprint gold medal with an Olympic-record-setting time of 9.63 seconds. But The Lightning Bolt didn't stop there; he also defended his 200-meter title, and finished up with a gold in the team relay. While 2008 was the year that Bolt burst onto the scene, 2012 was the year that he cemented himself as the best sprinter of all time. Overachiever? No, just typical behavior for the second most influential man of 2012.
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