LAS VEGAS, NV - FEBRUARY 02:  (R-L) Evan Dunham knees Gleison Tibau during their lightweight fight at UFC 156 on February 2, 2013 at the Mandalay Bay Events Center in Las Vegas, Nevada.  (Photo by Donald Miralle/Zuffa LLC/Zuffa LLC via Getty Images) *** Local Caption *** Gleison Tibau; Evan Dunham
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