Greatest KOs in heavyweight history

When you put two big, powerful heavyweights together inside the

Octagon, there are going to be times where the confrontations end

in spectacular fashion.

Just days before Cain Velasquez and Junior dos Santos renew lock

horns for the UFC heavyweight title for a third time

target="_blank">this weekend at UFC 166, UFC analyst Joe Rogan

looks back at the most impressive, emphatic, and unforgettable

knockout finishes in the history of the division.

From well-placed punches to kicks that seemingly came out of

nowhere, this collection of colossal knockouts featuring Velasquez,

dos Santos, Mark Hunt, and many others is just what you need to get

you excited for UFC 166 this weekend and bring a spark to your


What highlight reel finish will top the list? Press play and

find out.