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In this edition of Up Close and Personal, Paula Sack puts heavyweight world champ Junior dos Santos to the test in this extreme sports challenge. Catch dos Santos as he goes toe-to-toe in what promises to be an electrifying scrap at UFC® 146: dos Santos vs Mir, live on Pay-Per-View, May 26th at 10PM/7PM ET/PT, live from the MGM Grand Garden Arena in Las Vegas.