MEXICAN STARS AND WORLD TITLE FIGHTS ADDED TO “MAYHEM: MAYWEATHER VS. MAIDANA 2” SHOWTIME PPV® EVENT SATURDAY, SEPT. 13 AT MGM GRAND GARDEN ARENA Leo Santa Cruz Defends his WBC Super Bantamweight World Championship Against Manuel Roman in the Co-Main Event Miguel Vazquez Puts his IBF Lightweight World Title on the Line Against Mayweather Promotions’ … Continue reading Undercard Announced for Sept. 13 Mayweather-Maidana on Showtime PPV