 Santos boxed for the vacant WBO light-middleweight title against Yori Boy Campas in a fight that took place at Bally's Event Center in Las Vegas, Nevada.Santos won the fight when referee Joe Cortez intervened in the eleventh round.During the course of the fight numerous combinations hurt Campas and cut his face, in the eleventh round following one of Santos' punches Campas informed Cortez that his vision was not functioning properly.