Alistair Overeem came into his UFC 156 bout against Antonio "Bigfoot" Silva as the massive favourite.
Not many people were willing to bet against the well-rounded heavyweight, which is what made the ending of the fight so shocking.
After two rounds of Overeem toying with Silva, the Brazilian appeared to have had enough.
At the beginning of the third round, he unleashed some massive punches that eventually knocked "The Reem" into unconsciousness.
The Dutchman has a lot to work on if he wants to have a better outing in his next fight.