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Biggest Underdogs of 2012

8 of 20

Oscar Pistorius

South African native Oscar Pistorius made history at the 2012 Summer Olympics when he became the first double-amputee sprinter to qualify for the men's 400m and 4x400m relay events. Pistorius also competed in the London Paralympics and won gold medals in both of his primary events. (AP Photo/Alik Keplicz)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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