Consensus Rankings:   Official  |  Member Designed  |  This Ranking Updated 13 years, 2 months ago  |  All By raray

1. 1

   

   Jackson vs. Arona

   Quinton Jackson in round 1

   2004 | Pride Critical Countdown 2004

2. 2

   

   Gonzaga vs. Filipović

   Gabriel Gonzaga in round 1

   2007 | UFC 70

   I remember this moment more clearly probably than any other I've witnessed in MMA. I was at my wife's parent's house. Her grandparents were also in town so I was watching the fights upstairs while they entertained themselves otherwise in the living room.
   
   We had just seen Cro Cop get smothered on the ground and now that they were back on their feet I, and probably everyone else in the world, were just waiting for him to unleash his famous beat-down on Gonzaga.
   
   And then it came. The patented head kick landed flush only Cro Cop hadn't delivered the blow. Rather Gonzaga had thrown it up and now Cro Cop lay in a macabre, twisted heap of twitching limbs folded back on one another. Slack. Jawed. Amazement. Literally, I remember thinking, "My mouth has been open far too long".
   
   Unknown to me upstairs, my in-laws had tuned to the fight and seen the KO. My wife's grandmother was exclaiming, "He's dead. He's DEAD. I know it. I just watched a man get killed." She is not a fan of the MMA.
   

3. 3

   

   Franklin vs. Quarry

   Rich Franklin in round 1

   2005 | UFC 56

4. 4

   

   Liddell vs. Sobral I

   Chuck Liddell in round 1

   2002 | UFC 40

5. 5

   

   Silva vs. Filipović II

   Mirko Filipović in round 1

   2006 | Pride Final Conflict Absolute

6. 6

   

   Arlovski vs. Emelianenko

   Fedor Emelianenko in round 1

   2009 | Affliction 2

7. 7

   

   Henderson vs. Bisping

   Dan Henderson in round 2

   2009 | UFC 100

8. 8

   

   Silva vs. Jackson II

   Wanderlei Silva in round 2

   2004 | Pride 28

9. 9

   

   Silva vs. Belfort

   Anderson Silva in round 1

   2011 | UFC 126

   Three minutes of boredom followed by the most accurate and powerful back-leg front kick you've ever seen. Precisely the kind of thing we've come to expect from Silva.
   

10. 10

    

    Jackson vs. Liddell II

    Quinton Jackson in round 1

    2007 | UFC 71

11+

11. 11

    

    Silva vs. Irvin

    Anderson Silva in round 1  |  UFC Fight Night 14

12. 12

    

    Hardy vs. Condit

    Carlos Condit in round 1  |  UFC 120

13. 13

    

    Hughes vs. Penn III

    BJ Penn in round 1  |  UFC 123

14. 14

    

    Daley vs. Smith

    Paul Daley in round 1  |  Strikeforce

    If there was ever such a thing as a calculated KO, this was it. The fight didn't mean much, but it the actual KO was precise and devastating and Daley knew he had it as soon as the punch landed.
    

15. 15

    

    Aldo vs. Swanson

    José Aldo in round 1  |  WEC 41

    Making this list for its viciousness and decisiveness, the double-knee knockout ended the fight almost as soon as it started.