With back against cage, MMA fighter lands KO out of nowhere

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While Kimbo Slice's brutal knockout of Ken Shamrock stole the headlines, this from the Bellator 138 undercard wasn't too shabby itself.

Daniel Weichel had Patricio "Pitbull" Freire backed up against the cage and was delivering some heavy hands in the second round Friday night.

Pitbull countered with a swift left that caught Weichel right on the button in the middle of a flurry and ended his night right there.