The BMF title is up for grabs in the main event of UFC 291 on July 29, as Dustin Poirier and Justin Gaethje meet in a highly anticipated rematch at Delta Center in Utah where fireworks are not just expected, but mandatory when two of the best 155-pounders of this era collide. Plus, former champions meet when Alex Pereira makes his light heavyweight debut in a compelling matchup against the owner of "Polish Power," Jan Blachowicz.