2012 Olympians to Watch

Usain Bolt
Text: R.J. Rico, SI.com
Photo: Bob Martin/SI

Usain Bolt

Jamaica -- Track and Field

In 2008, Bolt broke both the 100m and the 200m world records, doubling in Beijing. But since that time American Tyson Gay and others have gotten closer to Bolt -- Gay even defeated him in 2010. Though Gay is injured and won't compete at this summer's World Championships in South Korea, Bolt is looking beatable this year.

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