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LAS VEGAS, NV - DECEMBER 29: Erik Perez walks to the Octagon to face Byron Bloodworth before their bantamweight fight at UFC 155 on December 29, 2012 at MGM Grand Garden Arena in Las Vegas, Nevada. (Photo by Donald Miralle/Zuffa LLC/Zuffa LLC via Getty Images)

UFC 155: Junior dos Santos vs. Cain Velasquez

Highlights from UFC 155, featuring the heavyweight title fight between current champ

Junior dos Santos and former champ Cain Velasquez, on Saturday, Dec. 29, 2012 at the MGM Grand Garden Arena in Las Vegas.