A former member of the Los Angeles Police Department, John McCarthy is a well-trained martial artist who earned a black belt in Brazilian Jiu Jitsu back in 2007. Most martial artists know him for his work as a professional MMA referee, a career that took off when he served as a head referee of nearly every fight from UFC 2 to UFC 77. He has also officiated for numerous other promotions including Bellator, Strikeforce, Affliction, King of the Cage, and more. In these old school tutorials, you have the opportunity to learn from this mixed martial arts icon.

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