Demetrious Johnson September’s UFC 191 event finally has a pay-per-view headliner, and the organization’s smallest – and arguably quickest – division will be on display. UFC officials today announced UFC flyweight champion Demetrious Johnson (22-2-1 MMA, 10-1-1 UFC) and challenger John Dodson (17-6 MMA, 7-1 UFC) will rematch at the event. UFC 191 takes place Sept. 5 at MGM Grand Garden Arena in Las Vegas. The main card airs on PPV following prelims on FOX Sports 1 and UFC Fight Pass