UFC 266: Volkanovski vs. Ortega was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on September 25, 2021 at T-Mobile Arena in Paradise, Nevada, part of the Las Vegas Metropolitan Area, United States.
Main Card
Alexander Volkanovski def. Brian Ortega via unanimous decision
Valentina Shevchenko def. Lauren Murphy by TKO (R4, 4:00)
Robbie Lawler def. Nick Diaz via third-round TKO (0:44)
Curtis Blaydes def. Jairzinho Rozenstruik via unanimous decision
Jessica Andrade def. Cynthia Calvillo via first-round TKO (4:54)
Undercard
Merab Dvalishvili def. Marlon Moraes via second-round TKO (4:25)
Dan Hooker def. Nasrat Haqparast via unanimous decision (30-27 x2, 30-26)
Chris Daukaus def. Shamil Abdurakhimov via second-round TKO (1:23)
Taila Santos def. Roxanne Modafferi via unanimous decision (30-27 x3)
Jalin Turner def. Uros Medic via sub (RNC) (R1, 4:01)
Nick Maximov def. Cody Brundage via unanimous decision (29-28 x3)
Matthew Semelsberger def. Martin Sano via KO (punch) – Round 1, 0:15
Jonathan Pearce def. Omar Morales via submission (rear-naked choke) – Round 2, 3:31