Paulo Filho (born May 24, 1978) is a Brazilian mixed martial arts (MMA) fighter as well as a Brazilian Jiu-Jitsu and Judo practitioner, fighting out of Rio de Janeiro, Brazil. Filho is the current and last WEC middleweight champion.

Chael Sonnen (born April 3, 1977 in West Linn, Oregon) is an American mixed martial artist (MMA). He is currently signed as a middleweight with World Extreme Cagefighting (WEC), which is owned by Zuffa (the parent company of the UFC).