A post in the Pettis vs. RDA thread got me thinking, what is the best performance you can think of where a challenger took the title from the champion? It's one thing to put on a dominant performance, it's another entirely to do it against a champion; psychologically that must be a very hard thing to do. I think RDA's certainly has a case for being up there, Jones vs Rua is another one that springs to mind in somewhat recent memory. Holly Holm was clearly unphased by the situation and dismantled Ronda. What others are there? *EDIT* - Also, before Conor fans go nuts - and as impressive as what he did to Jose Aldo was - it was so short that I decided not to mention it. I am thinking more of like complete destructions of the champion where the challenger showed how superior they were in many areas.