Fabricio Werdum, for a while, was known as that guy in the UFC that a then relatively unknown Junior Dos Santos knocked flat on his back. A move to Strikeforce, and becoming the first to defeat the legendary Fedor, changed all that, and since his return Werdum has yet to taste defeat. He defeated Roy "Big Country" Nelson in his welcome back fight, a three round decision (the only way to beat Nelson in the UFC so far), dominated Mike Russow in Brazil, submitted the legendary Big Nog, then put on a five round clinic in a number one contender's match versus Travis Browne this past April. Having proved he has the cardio, striking, and of course his well-known BJJ skills, Werdum is a legit threat to champion Cain Valasquez.