If you watched the Ultimate Fighting Championship 121 then you would have witnessed one of the most vicious fights ever to have happened inside a mixed martial arts ring. Reigning heavyweight champion, Brock Lesnar, took on the much fancied Mexican-American fighter Cain Velasquez in what was destined to be one of the most brutal fights in UFC history.
Lesnar comes out swinging, but Velasquez is a wily character. He quickly turns things around, and lays into Brock with some vigor. He manages to take down Lesnar in a single round!
Watch the ferocious bout below: