12. Eugene Jackson vs. Mark Weir 0:10 at UFC 38
Eugene Jackson faced Mark Weir at UFC 38: Brawl at the Hall on January 11, 2002. The fight took place at the Royal Albert Hall in London, England, United Kingdom.
The event was part of the main card and was a middleweight bout.The fight ended quickly, with Weir defeating Jackson via KO/TKO at 0:10 of Round 1.
11. Jairzinho Rozenstruik vs. Allen Crowder 0:09 at UFC
Jairzinho Rozenstruik faced Allen Crowder in a heavyweight bout at UFC on ESPN+ 12 on June 22, 2019, at the Bon Secours Wellness Arena in Greenville, South Carolina.
The fight was part of the preliminary card and lasted only nine seconds.Rozenstruik won the fight via KO/TKO with a powerful right hand that knocked Crowder out cold.
The victory marked Rozenstruik’s eighth consecutive win and his UFC debut.
10. Joe Veres vs. Gray Maynard 0:09 at UFC Fight Night 11
Gray Maynard faced Joe Veres in a lightweight bout at UFC Fight Night 11 on September 19, 2007.
The fight lasted only nine seconds, with Maynard winning by KO/TKO with a powerful right hand that knocked Veres out cold.
The victory marked Maynard’s second win in the UFC and his second consecutive win by KO/TKO.
The fight is also notable for being featured as a KO of the Week on UFC.com and other MMA websites.
9. Don Frye vs. Thomas Ramirez 0:08 at UFC 8
Don Frye faced Thomas Ramirez in a heavyweight bout at UFC 8: David vs. Goliath on February 16, 1996.
The fight lasted only eight seconds, with Frye winning by KO/TKO with a powerful punch that knocked Ramirez out cold.
The fight is notable for being one of the fastest knockouts in UFC history. Frye went on to win the UFC 8 tournament later that day, defeating Sam Adkins and Gary Goodridge.
He went on to have a celebrated career in MMA, with notable wins over fighters such as Ken Shamrock and Tank Abbott.
8. Andy Ogle vs. Makwan Amirkhani 0:08 at UFC on FOX 14
Andy Ogle faced Makwan Amirkhani in a featherweight bout at UFC on FOX 14 on January 24, 2015.
The fight lasted only eight seconds, with Amirkhani winning by TKO with a flying knee and punches that quickly ended the bout.
The victory marked a spectacular UFC debut for Amirkhani and is one of the fastest finishes in UFC history.
7. Leon Edwards vs. Seth Baczynski 0:08 at UFC Fight Night 64
Leon Edwards faced Seth Baczynski in a welterweight bout at UFC Fight Night 64 on April 11, 2015.
The fight lasted only eight seconds, with Edwards winning by KO/TKO, marking one of the fastest finishes in UFC history.
This victory was a significant moment in Edwards’ UFC career, showcasing his striking ability and earning him his first UFC victory by knockout.
6. James Irvin vs. Houston Alexander 0:08 at UFC Fight Night 13
James Irvin faced Houston Alexander in a light heavyweight bout at UFC Fight Night 13 on April 2, 2008.
The fight lasted only eight seconds, with Irvin winning by KO/TKO with a superman punch that knocked Alexander out cold.
The victory tied the record for the fastest knockout in UFC at the time. Irvin went on to have a mixed career in the UFC, with notable wins over fighters such as Luiz Cane and Hector Ramirez, as well as losses to Anderson Silva and Thiago Silva.
5. Chan Sung Jung vs. Mark Hominick 0:07 at UFC 140
Chan Sung Jung faced Mark Hominick in a featherweight bout at UFC 140 on December 10, 2011.
The fight lasted only seven seconds, with Jung winning by KO/TKO with a punch to the head that knocked Hominick out cold.
The victory tied the record for the fastest knockout in UFC history at the time. The fight was the eighth bout of UFC 140 and the first to air on the pay-per-view televised main card.
The shocking finish was one of the most memorable moments in UFC history and cemented Jung’s status as a top featherweight contender
4. Anthony Perosh vs. Ryan Jimmo 0:07 at UFC 149
Anthony Perosh faced Ryan Jimmo in a light heavyweight bout at UFC 149 on July 21, 2012.
The fight lasted only seven seconds, with Jimmo winning by KO/TKO with a punch to the head that quickly ended the bout.
3. Todd Duffee vs. Tim Hague 0:07 at UFC 102
Todd Duffee faced Tim Hague in a heavyweight bout at UFC 102 on August 29, 2009. The fight lasted only seven seconds, with Duffee winning by KO/TKO.
Duffee landed four significant strikes during the fight, all of which were knockdowns. The fight marked Duffee’s first fight in the UFC, and he made a significant impact with his rapid and powerful striking.
Overall fight was kind of an Underdog story, as Duffee was considered an underdog going into the fight, but his performance showed that he was a force to be reckoned with in the heavyweight division
2. Terrance McKinney vs. Matt Frevola 0:07 at UFC 263
Terrance McKinney’s victory over Matt Frevola at UFC 263 is significant due to its rapid conclusion. McKinney defeated Frevola via KO/TKO at 0:07 of Round 1.
This victory marked McKinney’s impressive UFC debut, showcasing his striking ability and making a memorable impact in the lightweight division.
The fight is notable for its quick jab and cross from McKinney, followed by hammerfists that forced the referee to intervene at the 0:07 mark.
The rapid and decisive nature of the victory garnered significant attention and established McKinney as a promising talent in the UFC.
1. Jorge Masvidal vs. Ben Askren 0:05 at UFC 239
The fastest KO in UFC history is held by Jorge Masvidal, who defeated Ben Askren in just 0:05 seconds at UFC 239.
The fight is notable for Masvidal’s flying knee that landed flush on Askren’s ear, knocking him out cold. The victory was a significant moment in Masvidal’s career, showcasing his striking ability and establishing him as a top welterweight contender.
The fight is also remembered for the trash talk between the two fighters leading up to the bout.