UFC on ESPN 27: Sandhagen vs. Dillashaw was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on July 24, 2021, at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A bantamweight bout between former two-time UFC Bantamweight Champion T.J. Dillashaw and Cory Sandhagen served as the event headliner. It was Dillashaw's first fight since his two-year suspension due to testing positive for recombinant human erythropoietin (EPO), which resulted in his title vacancy.

UFC on ESPN 27: Sandhagen vs. Dillashaw

UFC Fight Night 201: Walker vs. Hill was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on February 19, 2022, at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A lightweight bout between former UFC Lightweight Champion Rafael dos Anjos and Rafael Fiziev was expected to serve as the event headliner. However, the bout was postponed to UFC 272 due to visa issues with Fiziev. Instead, a light heavyweight bout between Johnny Walker and Jamahal Hill served as the main event.

UFC Fight Night 201: Walker vs. Hill

UFC Fight Night 229: Dawson vs. Green was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on October 7, 2023, at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A lightweight bout between Grant Dawson and Bobby Green headlined the event.

UFC Fight Night 229: Dawson vs. Green

UFC 289: Nunes vs. Aldana was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on June 10, 2023, at the Rogers Arena in Vancouver, British Columbia, Canada. A UFC Women's Bantamweight Championship bout between current two-time champion (also current UFC Women's Featherweight Champion) Amanda Nunes and Irene Aldana headlined the event.

UFC 289: Nunes vs. Aldana

UFC Fight Night 235: Dolidze vs. Imavov was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on February 3, 2024, at the UFC Apex facility, in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A middleweight bout between Roman Dolidze and Nassourdine Imavov headlined the event.