Top 5 Fastest Knockouts in UFC History

In MMA, it only takes one shot. That’s the beauty—and brutality—of the sport. Fighters spend months preparing, strategizing, cutting weight… and then sometimes, it’s all over in the blink of an eye.

Fast knockouts are pure adrenaline. They’re unforgettable, they go viral, and they send shockwaves through the division. Let’s take a look at the five fastest knockouts in UFC history, ranked by official time. These moments didn’t just end fights—they made history.

5. Chan Sung Jung vs. Mark Hominick – 0:07 Seconds

📅 UFC 140 | December 10, 2011
📍 Toronto, Canada
💥 KO Time: 0:07 seconds
📈 Result: The Korean Zombie wins via KO (punch)

Mark Hominick came out swinging… and walked right into a right hand from “The Korean Zombie.” Just seven seconds into the fight, Chan Sung Jung dropped Hominick cold. It was the perfect counter, and it tied the record for fastest KO at the time.

Jung’s timing was razor-sharp, catching Hominick mid-strike and planting him face-first with one clean shot. The crowd in Toronto erupted as the ref waved it off—barely having time to react himself.

What makes this KO even more impressive is that Hominick was coming off a competitive title fight against Jose Aldo earlier that year, and many saw him as a heavy favorite. Jung’s win proved he was far more than a cult-favorite brawler—he was a true contender in the featherweight division.

4. Ryan Jimmo vs. Anthony Perosh – 0:07 Seconds

📅 UFC 149 | July 21, 2012
📍 Calgary, Canada
💥 KO Time: 0:07 seconds
📈 Result: Jimmo wins via KO (punch)

Ryan Jimmo only needed one shot to leave a lasting impression in his UFC debut. The Canadian light heavyweight blasted Anthony Perosh with a right hand that sent him stiff to the canvas. Jimmo celebrated with a perfectly-timed robot dance—iconic in its own right.

This was Jimmo’s first fight in the UFC, and he made the absolute most of it. After years of grinding on the regional scene, he finally got his moment—and didn’t waste a second.

Perosh never saw it coming. One looping overhand right was all it took. Jimmo’s KO tied the UFC’s fastest finish record at the time, and although his UFC career didn’t last long, this moment is forever etched in highlight reels.

3. Terrance McKinney vs. Matt Frevola – 0:07 Seconds

📅 UFC 263 | June 12, 2021
📍 Glendale, Arizona
💥 KO Time: 0:07 seconds
📈 Result: McKinney wins via KO (punches)

Talk about a debut. Terrance McKinney took the fight on short notice and delivered a stunning KO that left Matt Frevola staring at the lights just seconds into Round 1. A straight one-two combo and a follow-up hammerfist, and that was all she wrote. It was the fastest KO in UFC lightweight history, and McKinney didn’t just win—he announced himself as a problem at 155.

McKinney’s story made this KO even more special. Just a few years before, he had nearly died from a drug overdose. Fast forward to UFC 263, and he made history with one of the most explosive first impressions in UFC history.

Frevola was a respected veteran, but he never got a chance to showcase his skills. McKinney’s speed, accuracy, and power were all dialed in. After the KO, McKinney jumped the cage to celebrate and unfortunately tweaked his knee, but even that couldn’t overshadow the moment.

2. Duane Ludwig vs. Jonathan Goulet – 0:06 Seconds

📅 UFC Fight Night 3 | January 16, 2006
📍 Las Vegas, Nevada
💥 KO Time: 0:06 seconds (official, later corrected)
📈 Result: Ludwig wins via KO (punch)

For years, Duane “Bang” Ludwig was believed to have the fastest knockout in UFC history. And honestly, he probably still does—some replays suggest it ended in under 5 seconds, but the official clock read six. Ludwig stunned Goulet with a crushing right hand just seconds into the fight, and Goulet crumbled.

Initially, the UFC recorded the KO at 11 seconds. But after reviewing footage and timing it properly, the promotion officially adjusted the result to 6 seconds in 2011—five years later. It was one of the rare moments where the UFC retroactively rewrote the record books.

Ludwig’s striking was always sharp, and he was ahead of his time with footwork and timing. That same technical prowess later turned him into one of MMA’s most respected coaches, famously leading T.J. Dillashaw to UFC gold.

1. Jorge Masvidal vs. Ben Askren – 0:05 Seconds

📅 UFC 239 | July 6, 2019
📍 Las Vegas, Nevada
💥 KO Time: 0:05 seconds (Official UFC Record)
📈 Result: Masvidal wins via KO (flying knee)

No surprise here.

Jorge Masvidal etched his name into UFC history with the fastest knockout ever. It took just five seconds—and one perfectly-timed flying knee—to shut down Ben Askren. The moment went viral immediately. The sound of Askren’s body hitting the mat was brutal. Masvidal added a few unnecessary follow-up shots, stared down the camera, and hit his signature “Gamebred” pose.

This wasn’t just a knockout—it was personal. The build-up to the fight was intense. Askren’s undefeated record, wrestling style, and trash talk made him a polarizing figure, and Masvidal made sure the ending was emphatic.

With this KO, Masvidal became a global star. It earned him the UFC’s 2019 Knockout of the Year, blew up his social media, and even led to the creation of the BMF title fight against Nate Diaz. As far as viral knockouts go, this one changed careers and altered UFC storytelling forever.

⚡ Recap Table: Fastest UFC Knockouts Ever