Watch four full fights featuring Chael Sonnen as he takes on some of the toughest challengers of his career. #MMA #PFL #PFLMMA #Combatsports PFL on Social Media: ► Like on Facebook: facebook.com/pflmma ► Follow on Instagram: instagram.com/pflmma ► Follow on Twitter: twitter.com/PFLMMA More on PFLmma.com: pflmma.com