Robert Guerrero
Berto's next fight was scheduled for November 24, 2012, in Ontario, California. The opponent was "Ring" Top 10 welterweight and WBC Interim welterweight champion Robert Guerrero. Berto was knocked down twice early in the fight but came back well to give Guerrero a tough scrap, but Guerrero managed to narrowly maintain control and won via unanimous decision. Both of Berto's eyes and Guerrero's right eye were closed shut by the end of the fight.