^2 of 27 Light Heavyweight bouts in first deprecated UFC Middleweight (171-199 lbs.) class (now known as Light Heavyweight) and 2 of 27 Light Heavyweight bouts in first deprecated UFC Lightweight (< 199 lbs.) class (now known as Light Heavyweight)
^Not listed in source. Information found in fighter's page.
^Not listed in source. Information found in fighter's page.
^Not listed in source, information found in fighter's page.
^4 of 5 Finishes in deprecated UFC Middleweight (171-199 lbs.) class (now known as Light Heavyweight) and 1 of 5 submissions in first deprecated UFC Lightweight (< 199 lbs.) class (now known as Light Heavyweight)
^Official UFC records have the bout time at 0:11, Dana White and UFC officials have admitted[23] the actual KO time was 0:06. The NSAC cannot retroactively amend bout times.
^2 of 3 submissions in deprecated UFC Middleweight (171-199 lbs.) class (now known as Light Heavyweight) and 1 of 3 submissions in first deprecated UFC Lightweight (< 199 lbs.) class (now known as Light Heavyweight)
^8 of 58 Light Heavyweight takedowns in deprecated UFC Middleweight (171-199 lbs.) class (now known as Light Heavyweight) and 2 of 58 Light Heavyweight takedowns in first deprecated UFC Lightweight (< 199 lbs.) class (now known as Light Heavyweight)
^8 of 9 Light Heavyweight title submission attempts in deprecated UFC Middleweight (171-199 lbs.) class (now known as Light Heavyweight) and 1 of 9 Light Heavyweight title submission attempts in first deprecated UFC Lightweight (< 199 lbs.) class (now known as Light Heavyweight)
2.^José Aldo was awarded the Featherweight Championship at UFC 123 but did not fight in his first UFC bout until UFC 129, at which point he was 24 years and 233 days of age. Aldo successfully defended his title at UFC 129.
This category only scores pay-per-view buys from The Ultimate Fighting Championship event held in Denver, CO (1993) to UFC 235. The UFC's 2019 contract with ESPN+ mandates a subscription to the over-the-top service which is the exclusive distributor of UFC pay-per-views in the United States in order to purchase the event. UFC and ESPN do not report on pay-per-view buys starting with UFC 236.
NOTE: Starting with UFC 236, all pay-per-views in the United States are iPPV events where an ESPN+ subscription is required. Neither UFC nor ESPN report PPV buys with the new format.
^"UFC 228 results: Jim Miller makes UFC history, submits Alex White in 89 seconds". MMAjunkie. 2018-09-08. Retrieved 2018-09-12.
^Bissell, Tim (2022-02-22). "Jim Miller targeting Donald Cerrone or Joe Lauzon for record 40th UFC fight". Bloody Elbow. Retrieved 2023-01-26. [Miller] spoke about [...] what he'd like to happen for his record-breaking 40th fight.
^ abcdefghijk"UFC Records — Career". statleaders.ufc.com. Retrieved 2021-05-16.
^ abcdefghi"UFC Records - Heavyweight". statleaders.ufc.com. Retrieved 2020-04-23.
^ abcdefghij"UFC Records - Welterweight". statleaders.ufc.com. Retrieved 2024-01-20.
^ abcdefghij"UFC Records - Lightweight". statleaders.ufc.com. Retrieved 2024-01-13.
^ abcdefghijk"UFC Records - Featherweight". statleaders.ufc.com. Retrieved 2023-08-26.
^ abcdefghi"UFC Records - Bantamweight". statleaders.ufc.com. Retrieved 2023-04-15.
^ abcdefghijkl"UFC Records - Flyweight". statleaders.ufc.com. Retrieved 2020-04-23.
^ abcdefghijk"UFC Records - Women's Bantamweight". statleaders.ufc.com. Retrieved 2024-01-20.
^ abcdefghij"UFC Records - Women's Flyweight". statleaders.ufc.com. Retrieved 2024-03-09.
^ abcdefghij"UFC Records - Women's Strawweight". statleaders.ufc.com. Retrieved 2020-04-23.
^ abcdefg"UFC Records - Light Heavyweight". statleaders.ufc.com. Retrieved 2020-04-23.
^ abcdefghi"UFC Records - Middleweights". statleaders.ufc.com.
^Fox Sports (2014-11-14). "UFC RECORDS FALL: EVERY FIGHT ENDS WITH A FINISH ON AMAZING NIGHT IN SYDNEY". foxsports.com. Retrieved 2022-03-13.
^Fox Sports (2014-11-14). "UFC RECORDS FALL: EVERY FIGHT ENDS WITH A FINISH ON AMAZING NIGHT IN SYDNEY". foxsports.com. Retrieved 2022-03-13.
^ ab"UFC Records - Fights". statleaders.ufc.com. 2019-07-07. Retrieved 2020-04-23.
^ ab"Masvidal's 5-second KO fastest in UFC history". ESPN.com. 2019-07-07. Retrieved 2019-07-07.
^"Derrick Lewis Breaks most HW KO's record". 2020-08-09.
^ abcd"UFC Records - Event". statleaders.ufc.com. Retrieved 2023-03-06.
^Sherdog.com. "Ludwig Elated That UFC Acknowledges Fastest KO Record". Sherdog. Retrieved 2019-07-07.
^Conor McGregor knocks out Jose Aldo in fastest KO in UFC MMAweekly.com, December 13, 2015
^Mike Bohn (2015-12-27). "UFC in 2015: A ridiculously robust look at stats, streaks, skids and record-setters". mmajunkie.com. Retrieved 2024-02-19.
^ abcde"UFC Records - Career". statleaders.ufc.com. Retrieved 2023-03-05.
^"UFC Stats - Fighter - Counting Sig Strikes Per Fighter Page". ufcstats.com. Retrieved 2023-03-05.
^"FightMetric LLC :.: The World's First Comprehensive MMA Statistics Provider". www.fightmetric.com. Retrieved 2018-08-10.
^ abcd"UFC Records - Fight". statleaders.ufc.com. Retrieved 2023-03-07.
^"Max Holloway's epic performance vs. Calvin Kattar is an all-timer".
^"Every fighter in the history of the UFC's most exclusive division: women's featherweight". MMA Junkie. 2023-07-16. Retrieved 2024-04-07.
^"Every fighter in the history of the UFC's most exclusive division: women's featherweight". MMA Junkie. 2023-07-16. Retrieved 2024-03-20.
^"UFC Stats - Fighter - Royce Gracie - Counted only UFC Submission Attempts and time and divided by 300 seconds for five minute round stat". UFC.com. Retrieved March 8, 2023.
^"MMA All-time Record Holders". sportsillustrated.
^Robert Whittaker vs Israel Adesanya Sets the Record for Highest Attendance In an UFC Event
^Holly Holm knocks out Ronda Rousey to win bantamweight title Herald Sun, November 15, 2015
^Bloodied St. Pierre decisions Shields ESPN, April 30, 2011
^UFC 198 REWIND: WHAT YOU GOT RIGHT & WRONG UFC.com, May 15, 2016
^Alexander Gustafsson vs. Anthony Johnson to headline FOX event in Sweden Fox Sports, November 12, 2014
^"Pay Per View Buys". tapology.com. Retrieved 2020-07-06.
^"REPORT| UFC 224 lowest PPV buys for the company in a decade well under 100,000 buys". The Official Website of Cristiane "Cyborg" Santos. 2018-05-16. Retrieved 2018-07-17.