Since then, the "BMF" title has been one of the UFC's savviest marketing plays, reserved for the promotion's most ferocious, exciting fighters: Diaz, Masvidal, Justin Gaethje, Dustin Poirier, Holloway and Oliveira. The UFC stands as the BMF's official record keeper, but the true origin story belongs to Diaz. It's a story that began in Stockton, California, where every Diaz story starts.