LAS VEGAS, NV - MAY 25:   (L-R) Cain Velasquez punches Antonio Silva in their heavyweight championship bout during UFC 160 at the MGM Grand Garden Arena on May 25, 2013 in Las Vegas, Nevada.  (Photo by Donald Miralle/Zuffa LLC/Zuffa LLC via Getty Images)  *** Local Caption *** Cain Velasquez; Antonio Silva
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