Cain Velasquez lands a punch on Junior dos Santos' face during their fight at UFC 155. (Courtesy: Tracy Lee for Y! Sports)

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Cain Velasquez lands a punch on Junior dos Santos' face during their fight at UFC 155. (Courtesy: Tracy Lee for Y! Sports)
Cain Velasquez lands a punch on Junior dos Santos' face during their fight at UFC 155. (Courtesy: Tracy Lee for Y! Sports)
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