15 Fastest Knockouts in the History of UFC
- - - 15 Fastest Knockouts in the History of UFC
Owen ChaseJuly 8, 2025 at 11:42 PM
There’s no blueprint for how a UFC fight will end. Sometimes, one strike is all it takes. These are the moments when a fighter needed only a few seconds to finish the job. Here are 15 of those rare knockouts.
Anthony Johnson vs. Glover Teixeira – 13 Seconds
Credit: Youtube
At UFC 202, Anthony Johnson needed only 13 seconds to flatten Glover Teixeira with an uppercut that launched his mouthguard into orbit. “Rumble” was always known for scary knockout power, and this was one of the clearest examples of just how dangerous he could be.
José Aldo vs. Conor McGregor – 13 Seconds
Credit: Wikimedia Commons
One of the most hyped fights in UFC history ended in a flash at UFC 194. José Aldo charged in, Conor McGregor countered with a left hand, and the champ hit the canvas face-first. In 13 seconds, McGregor became the undisputed featherweight champion. The knockout broke UFC records for title fights and remains one of the most replayed moments in combat sports history.
Caol Uno vs. BJ Penn – 11 Seconds
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UFC 34 featured a young BJ Penn, who had only three fights into his MMA career, taking on veteran Caol Uno. The rapid-fire combo sent Uno tumbling to the mat just 11 seconds in. Penn was not just a jiu-jitsu prodigy; he had lightning-fast hands, too.
Duane Ludwig vs. Jonathan Goulet – 6.06 Seconds (Unofficial)
Credit: Wikipedia
Duane Ludwig technically delivered a knockout in 6.06 seconds at UFC Fight Night 3 in 2006, but due to a timing delay, the official record reads 11 seconds. The UFC later adjusted its in-house stats, but athletic commissions still haven’t followed. Regardless, the footage speaks for itself.
Gray Maynard vs. Joe Veres – 9 Seconds
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Gray Maynard wasn’t known for early knockouts, but his bout with Joe Veres in 2007 ended in a hurry. A right hand caught Veres cold, and Maynard pounced before the ref stepped in at the nine-second mark. It was Maynard’s first UFC victory, and while he later gained fame through his trilogy with Frankie Edgar, this quick KO made an early statement.
Jairzinho Rozenstruik vs. Allen Crowder – 9 Seconds
Credit: Wikimedia Commons
At UFC Fight Night 154, Jairzinho Rozenstruik showed heavyweight precision with a short right hand that crumpled Allen Crowder in nine seconds. The jab-to-overhand combo was so clean that Rozenstruik barely broke a sweat. This win put him on the radar as one of the scariest punchers in the heavyweight division and kicked off a string of fast finishes.
Makwan Amirkhani vs. Andy Ogle – 8 Seconds
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Makwan Amirkhani introduced himself to UFC fans in style at UFC on FOX 14 in 2015. A flying knee, followed by a right uppercut, spelled the end for Andy Ogle just eight seconds in. Amirkhani sprinted around the cage in celebration while the Stockholm crowd went wild.
Leon Edwards vs. Seth Baczynski – 8 Seconds
Credit: Youtube
Long before he was UFC welterweight champ, Leon Edwards delivered a quick reminder of his striking power at UFC Fight Night 64. One well-placed left hand sent Seth Baczynski to the ground in just eight seconds. The crisp shot earned him a Performance of the Night bonus, as well as a highlight clip that still circulates.
Don Frye vs. Thomas Ramirez – 8 Seconds
Credit: Youtube
UFC 8 in 1996 gave fans an early taste of fight-ending violence. Don Frye charged Thomas Ramirez and threw a flurry of punches that ended the bout in just eight seconds. It was the first knockout of Frye’s UFC career, and at the time, it was the fastest finish in UFC history. Ramirez never fought in the UFC again.
James Irvin vs. Houston Alexander – 8 Seconds
Credit: Wikipedia
James Irvin came flying out of the gate at UFC Fight Night 13 in 2008 with a flying knee that stunned Houston Alexander. He followed it with strikes on the ground, and the referee stepped in at the eight-second mark. It helped keep Irvin’s name in the mix for years afterward.
Chan Sung Jung vs. Mark Hominick – 7 Seconds
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Chan Sung Jung has always been a fan favorite, and his fight against Mark Hominick at UFC 140 only added to his legend. After avoiding an overzealous opening strike, Jung countered perfectly and dropped Hominick with a right hand. Seven seconds on the clock, and it was lights out.
Ryan Jimmo vs. Anthony Perosh – 7 Seconds
Credit: mmafighting
Making his Octagon debut at UFC 149, Ryan Jimmo threw a single, well-timed right hand that knocked out Anthony Perosh in seven seconds flat. Jimmo had fought for years before making it to the UFC, and he made the most of his first shot. His post-fight robot dance became instantly iconic.
Terrance McKinney vs. Matt Frevola – 7 Seconds
Credit: Tportal
Terrance McKinney’s UFC debut at UFC 263 was a show of explosive timing. Just a few seconds in, he threw a right hand that flattened Matt Frevola. After a couple of hammerfists, it was over—seven seconds from start to finish. McKinney tore his knee celebrating, but the damage was already done. It’s still the fastest finish in UFC lightweight history.
Todd Duffee vs. Tim Hague – 7 Seconds
Credit: sherdog
Todd Duffee’s UFC debut at UFC 102 was as emphatic as they come. He jabbed, feinted, and then crushed Tim Hague with a left hook that ended the fight in seven seconds. For years, this knockout held the title of fastest in UFC heavyweight history.
Jorge Masvidal vs. Ben Askren – 5 Seconds
Credit: Youtube
There’s fast—and then there’s Jorge Masvidal’s flying knee at UFC 239. He sprinted across the cage, leaped into the air, and knocked out Ben Askren in just five seconds. It was premeditated, brutal, and completely viral. The knockout broke the all-time UFC speed record and instantly turned Masvidal into a megastar. Even now, it remains the defining five seconds in UFC history.
Source: AOL Sports
