Usain Bolt: Lightning that struck twice
The fastest man the world has ever seen, the 'Lightning Bolt' shot to worldwide fame in Beijing in 2008 as the first man to do the 100m-200m sprint double since American Carl Lewis in 1984, and then became the first in Olympic history to repeat the feat with his London triumphs.
Not only that, in Beijing the lanky, laid-back Jamaican smashed world records in both sprint finals and he went on to lower the 100m and 200m marks a year later, to 9.58sec and 19.19sec respectively.
He also anchored Jamaica's 4x100m sprint relay team to gold in both Games, also in world record times. With six golds already, Bolt is aiming at an unprecedented 'treble-treble' in Rio which, if achieved, may never be matched.
He has also won a record 11 world championships gold medals since 2009.
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