UFC 279: Diaz vs. Ferguson was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on September 10, 2022, at the T-Mobile Arena in Paradise, Nevada, part of the Las Vegas Metropolitan Area, United States.

[3][4] Originally, a welterweight bout headlining Khamzat Chimaev against Nate Diaz, former lightweight title challenger and winner of The Ultimate Fighter 5, was set for the event.

[13] While the organization typically conducts a pre-fight press conference two days ahead of numbered events, this session was interrupted and cut short.

Fighters from the final three bouts were scheduled to attend, but after an extended wait, UFC President Dana White showed up only with Holland and Rodriguez.

Both bouts proceeded at catchweight with Dawodu and Barnett each fined 30% and 20% of their purses, which went to their opponents Julian Erosa and Jake Collier respectively.