Former WWE superstar CM Punk (Phil Brooks) walked away from the world of predetermined outcomes and scripted entertainment to join the ranks of the UFC. It’s been done before, but not by someone with virtually no combat sports experience, not a single MMA fight, and definitely not at the age of 37. Yet on Sept. 10 Punk will face 2-0 Miller Brothers MMA welterweight Mickey Gall at UFC 203. Fox Sports 1 (FS1) has a special coming up on Aug. 15 at 9:30 p.m. ET/6:30 p.m. PT entitled “The Evolution of Punk” chronicling the former pro wrestler’s venture into mixed martial arts as he prepares for his UFC debut. Check out the trailer below for never before seen footage of Punk training and sparring.