After months of buildup and anticipation, the 2012 London Olympic Games are upon us. Athletes from all four corners of the globe are ready to vie for the top spots in their selected sports.
Of course, there will be plenty of favorites who will take home gold for their respective countries. However, there will be athletes who are deemed underdogs that will rise to the occasion and shock the world.
Here are eight American athletes who are poised to do just that and in the process become superstars in their respective sports.
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