No. 6 - Frankie Edgar Upsets Legendary B.J. Penn
At UFC 112, which was their debut show in the United Arab Emirates, Edgar was going up against a man known as "The Prodigy." Penn was the longtime UFC lightweight champion and had actually not lost a lightweight match in more than eight years. Even more amazing, he had not even been taken down in a lightweight fight in six years. All of those streaks came to an end after the five-round championship bout, when Edgar won in a unanimous decision. Edgar himself seemed shocked afterward at what he has just done, saying "He's the greatest champion ever, and I just beat him!" Edgar went on to defend his title in a rematch with Penn, as well.