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LAS VEGAS, NV - DECEMBER 03: Mixed martial artist Roy Nelson attends the All in for CP celebrity charity poker event at the Rio Hotel & Casino benefiting the One Step Closer Foundation's effort to fight Cerebral Palsy on December 3, 2016 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/Getty Images)

LAS VEGAS, NV - DECEMBER 03:  Mixed martial artist Roy Nelson attends the All in for CP celebrity charity poker event at the Rio Hotel & Casino benefiting the One Step Closer Foundation's effort to fight Cerebral Palsy on December 3, 2016 in Las Vegas, Nevada.  (Photo by Gabe Ginsberg/Getty Images)