We posted the original last June, and you can find the link at the bottom of this post. Since then, we’ve had more bouts occur, we’ve improved the formulas, and added quite a bit of data,.
The significance of the upsets on this list is measured not by the betting odds, but by the difference in the Fightmatrix.com point standing between the two fighters, normalized by division. The list is ranked on total difference, not proportional difference, so newer results tend to take precedence, as there is a growing gap between the top notch fighters, and the bottom of the barrel.
- Gabriel Gonzaga W Mirko Filipovic (UFC 70, Apr 21 2007)
- Frank Mir W Antonio Rodrigo Nogueira (UFC 92, Dec 27 2008)
- Matt Serra W Georges St. Pierre (UFC 69, Apr 7 2007)
- Mark Hunt W Wanderlei Silva (Pride Shockwave 2004, Dec 31 2004)
- Quinton Jackson W Chuck Liddell 2 (UFC 71, May 26 2007)
- Mark Coleman W Mauricio Rua (Pride 31, Feb 26 2006)
- Keith Jardine W Chuck Liddell (UFC 76, Sep 22 2007 )
- Cheick Kongo W Mirko Filipovic (UFC 75, Sep 8 2007)
- Junior dos Santos W Fabricio Werdum (UFC 90, Oct 25 2008)
- Sergey Golyaev W Takanori Gomi (Sengoku 6th, Nov 1 2008)
[#4 SW] 
Richie Whitson beat 8. 
