UFC 264: Poirier vs. McGregor 3 was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on July 10, 2021 at the T-Mobile Arena in Paradise, Nevada, part of the Las Vegas Metropolitan Area, United States.
[6] Their first fight was a featherweight bout that happened in September 2014 at UFC 178, where McGregor won by first-round technical knockout.
[8] During fight week, it was revealed that former lightweight champion Rafael dos Anjos was selected by the organization to serve as a potential replacement in case of need.
[9] A middleweight bout between former KSW Welterweight Champion and Dricus du Plessis and Trevin Giles was scheduled to take place at UFC on ESPN: Brunson vs. Holland, but du Plessis was pulled from the event due to visa issues which restricted his travel.
[11] A welterweight bout between Sean Brady and former interim UFC Lightweight Championship challenger Kevin Lee was expected to take place at the event.