
8. Jose Aldo (2015)
Aldo established himself as the best featherweight fighter on the planet, becoming a WEC and then-UFC champion for eight years. Nobody was able to put him in serious trouble. The likes of Chad Mendes and Frankie Edgar challenged him but were unable to take his crown. But along came an Irish upstart by the name of Conor McGregor. His rise was unprecedented and he swiftly obtained a title shot.

The build-up to this fight was grueling. The two men went on a world tour to promote the fight and Aldo suffered mental fatigue as a result. However, McGregor reveled in it and used it as a weapon against his opponent. When the fight finally arrived, Aldo waded forward with guns blazing. The Notorious caught him with a counter left and knocked him unconscious in 14 seconds. It was an iconic moment.