Chris Weidman def. Anderson Silva, R1, UFC 162 What can be said about this one? Weidman shocked the world. Anderson Silva is human after all. Uriah Hall def. Adam Cella, R1, The Ultimate Fighter 17 Hall's UFC career hasn't been filled with highlights but this spinning knockout was one of the biggest of 2013. Antonio Silva def. Alistair Overeem, R3, UFC 156 Bigfoot Silva's come from behind knockout win over Overeem was one of the most satisfying in recent memory. Vitor Belfor def. Dan Henderson, UFC Fight Night 32 First Belfort nearly launches Henderson into space with an uppercut, then he finishes him off with a perfectly timed head kick. What a year for The Phenom!
In terms of shock... Weidman. In terms of how it was executed and the style of KO... I will have to go with Hall on this one.
This one is so hard because Anderson Silva was thought of as untouchable in the standup game. Since Weidman is more than likely the fighter of the year, I'm gonna have to go with Hall here.
Hall's KO was spectacular but in a no-pressure situation against an unheralded fighter. I think Barboza did it better last year against Etim in a proper UFC fight. Weidman starched the GOAT. That's my vote.