UFC on Fox 31: Lee vs. Iaquinta 2 was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on December 15, 2018 at Fiserv Forum in Milwaukee, Wisconsin, United States. A lightweight rematch between former interim title challenger Kevin Lee and Al Iaquinta served as the event headliner. The pairing met previously in February 2014 at UFC 169 with Iaquinta winning the fight via unanimous decision.

UFC Fight Night 192: Smith vs. Spann was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on September 18, 2021, at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A light heavyweight bout between former UFC Light Heavyweight Championship title challenger Anthony Smith and Ryan Spann served as the main event.

UFC Fight Night 165: Edgar vs. The Korean Zombie was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on December 21, 2019 at Sajik Arena in Busan, South Korea.

UFC Fight Night 177: Waterson vs. Hill was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on September 12, 2020 at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A women's strawweight bout between former Invicta FC Atomweight Champion Michelle Waterson and former Invicta FC Strawweight Champion Angela Hill served as the headliner.

UFC on ESPN 15: Munhoz vs. Edgar was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on August 22, 2020, at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A bantamweight bout between Pedro Munhoz and former UFC Lightweight Champion Frankie Edgar served as the event headliner.

UFC Fight Night 155: de Randamie vs. Ladd was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on July 13, 2019 at Golden 1 Center in Sacramento, California. A women's bantamweight bout between the inaugural UFC Women's Featherweight Champion Germaine de Randamie and Aspen Ladd served as the event headliner.

UFC Fight Night 184: Overeem vs. Volkov was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on February 6, 2021 at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. A heavyweight bout between the 2010 K-1 World Grand Prix Champion, former Strikeforce Heavyweight Champion and UFC Heavyweight Championship challenger Alistair Overeem and former Bellator Heavyweight World Champion Alexander Volkov served as the event headliner.

UFC 223: Khabib vs. Iaquinta is a mixed martial arts event produced by the Ultimate Fighting Championship held on April 7, 2018, at the Barclays Center in Brooklyn, New York.