Light heavyweight James Te-Huna got a brutal KO victory over Ricardo Romero on tonight's UFC 135 preliminary card, and it came in just 47 seconds.
For Romero, it's his second knockout loss in under a minute in a row, and he has been on the receiving end of many highlight-reel finishes MMA fans have been able to see this year from the best of the UFC's undercard fighters.
Spinning back fists, left hook, knees and other strikes all make up the best of 2011's preliminary card knockouts, and these are the top five.
*Photo from ESPN (UFC 129)
It has been a tough year for Ricardo Romero, who has gone 0-2 in his last two UFC bouts with quick knockout losses in both.
The first came in his UFC 126 bout with Kyle Kingsbury where he was stopped by the much larger opponent after a vicious knee attack put him on the mat at just 21 seconds into the first round.
At UFC 135, he looked to return back to his winning ways before being stopped by James Te-Huna in 47 seconds. It was the most devastating of the two and left him moaning on the canvas with the referee telling him everything would be alright.
Featherweight prospect Erik Koch proved he has the punching power to put the division's best fighters away, and he did just that in his UFC 128 bout with Raphael Assuncao.
Assuncao had experience fighting some of the best fighters in the division, but his chin couldn't withstand the power Koch packed in his punches.
The Brazilian was knocked out at 2:32 of the very first round. Koch was awarded the knockout of the night award.
Sometimes, the best knockouts are the ones you never see coming.
Everyone knew Jeremy Stephens had knockout power, but after two and a half rounds of getting out-boxed by former boxer Marcus Davis, nobody thought it was possible in this fight.
It was Davis' lightweight debut after having a tough couple outings at welterweight. He looked good early, putting the 24-year-old on the long end of a jab. It wasn't enough to keep the determined Stephens from getting to Davis to land a ruthless haymaker in the third round to knock him out cold.
It was one of the most spectacular knockouts of the year, and the dramatic comeback added to the victory.
On the undercard of UFC 129, young up-and-comer John Makdessi unloaded a powerful spinning back fist to knock out his opponent Kyle Watson.
The 25-year-old is a dynamic and exciting lightweight fighter coming up in the division. He currently trains at the TriStar Gym with Jon Jones and Georges St-Pierre.
With a 22-0 record in kickboxing, Makdessi has learned the tools of the trade and showcases them in his MMA bouts with a variety of kicks, including turning side-kicks, front kicks and spinning back-kicks.
Expect more of the same from this daring and determined prospect.
The featured bout of the UFC 131 Spike TV broadcast matched up UFC veterans Sam Stout and Yves Edwards, and their styles promised for explosive action.
Stout had been in the UFC since 2006, but he had never finished an opponent in his five UFC victories until he connected with a hard left hook to put Edwards down and out in the first round.
Edwards' head bounced against the canvas, leaving him unconscious for several minutes afterwards. Stout showed sportsmanship in not attacking his opponent with follow-up punches.
Victories like these revive a fighter's career, and it's a finish that will go down as one of the most memorable of 2011.