UFC 155: Junior dos Santos vs. Cain Velasquez

LAS VEGAS, NV - DECEMBER 29: Erik Perez reacts to his victory over Byron Bloodworth after 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)

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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.