UFC 279 Chimaev versus Diaz is an impending blended combative techniques occasion created by the Ultimate Fighting Championship that will happen on September 10, 2022, at the T-Mobile Arena in Paradise, Nevada, part of the Las Vegas Metropolitan Area, United States. A welterweight session between Khamzat Chimaev and previous UFC Lightweight Championship challenger likewise The Ultimate Fighter 5 lightweight victor Nate Diaz is supposed UFC 279 live to feature the occasion. The advancement initially designated a UFC Bantamweight Championship session between current hero Aljamain Sterling and previous double cross boss T.J. Dillashaw as the headliner, however picked to change plans and move it to UFC 280. A ladies' strawweight session between Hannah Cifers and Melissa Martinez was supposed to happen at the occasion. Nonetheless, Cifers pulled out because of undisclosed reasons and was supplanted by Elise Reed. A middleweight session between Jamie Pickett and Denis Tiuliulin was supposed to happen at UFC on ESPN dos Anjos versus Fiziev, yet it was moved to this card because of undisclosed reasons.