MMA pioneer Mark Kerr tells Joe Rogan how elite wrestling conquered fighting, and opens up about addiction, sobriety, and seeing his life turned into a movie.

Mark Kerr: Pioneering heavyweight MMA fighter and two-time ADCC champion who dominated the early UFC and Japan's Pride organization in the late 1990s. His struggles with opioid and alcohol addiction were documented in the 2002 HBO film 'The Smashing Machine' and dramatized in the 2025 movie of the same name starring Dwayne Johnson.
Joe Rogan and Mark Kerr reflect on Kerr's career as one of MMA's first dominant elite wrestlers and the brutal early days of the UFC and Pride in Japan. They trace the sport's explosive evolution from no-rules, untested 1990s spectacles to today's hyper-conditioned, technical athletes, discussing fighters like Khabib, Usyk, Chimaev, Pereira and the supremacy of wrestling. The conversation turns deeply personal as Kerr recounts how the Smashing Machine documentary captured him at the depths of his opioid addiction, and how he eventually got sober. They close on recovery, the psychological cost of elite competition, the singular drive required for greatness, and the new movie about his life.
Benny Safdie
“the movie's fantastic... it's a movie that happens to be about MMA, but it's a great movie.”— Joe Rogan
John Hyams
“I don't think anybody had any idea until the Smashing Machine documentary came out. And when that documentary came out, everybody was like, "Holy shit."”— Joe Rogan
Robert Clouse
“the symbols of kanji for a dragon, right? Bruce Lee was enter the dragon... dragon is all these parts to make one mythical thing”— Mark Kerr
Kathryn Bigelow
“that movie Hurt Locker when he's walking around the supermarket you can tell he wants to go back.”— Joe Rogan
VersaClimber
“that was the first time I saw a Versa Climber. I was like, whoa, conditioning... I was on a Versa Climber two days ago.”— Joe Rogan