LAS VEGAS, NV - DECEMBER 03: (R-L) Dong Hyun Kim of South Korea punches Brendan O'Reilly of Australia in their lightweight bout during The Ultimate Fighter Finale event inside the Pearl concert theater at the Palms Resort & Casino on December 3, 2016 in Las Vegas, Nevada. (Photo by Jeff Bottari/Zuffa LLC/Zuffa LLC via Getty Images)
