LAS VEGAS — Demetrious Johnson unanimously outpointed John Dodson Saturday night at UFC 191 to retain the flyweight title. Johnson (23-2) received winning scores of 49-46, 49-46 and 50-45 from the judges. Dodson dropped to 17-7. The fight was a rematch between the two lightning fast fighters, with Johnson winning the first bout by unanimous decision. In a bout between former heavyweight champions, Andrei Arlovski unanimously outpointed Frank Mir in three rounds. Arlovski (25-10), the fourth-ranked UFC heavyweight, moved into contention for a possible title fight. Mir dropped to 18-10. The judges scores it 29-28, 29-28 and 30-27. — AP