LOS ANGELES — Meeting almost three years to the month since their first world title matchup in August of 2015,  Abner Mares is looking to avenge his majority decision loss to Leo Santa Cruz and capture the World Boxing Assn. (WBA) super featherweight world title from a fighter he calls “humble” and a “great person.” … More Mares says he has to be “the bad guy” against Santa Cruz in rematch