Getting Ready for UFC 166: Diego Sanchez Knocks Out Joe Riggs (Video)

Diego-Sanchez-UFC-107-460x270Diego Sanchez faces Gilbert Melendez on the UFC 166: Velasquez vs. dos Santos 3 main card on Oct. 19 in Houston in an effort to make another run at the top of the lightweight division.  Take a look back at his knockout of Joe Riggs from UFC Fight Night 7.

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