Big John McCarthy is the authority when it comes to UFC referring having essentially created the position from the beginning of the development of the sport he has a great understanding of the concepts, interpretations and implementing of the rules within the sport.

At UFC FN 128 in Atlantic City by far one of the most controversial fight endings came at exactly 5 minutes of the third round when the fight was effectively called a TKO by the UFC Ref. While BJM later went on to say that it should have been ruled a submission victory instead of TKO, he did support the ref’s ruling in that Merab Dvalishvili was not able to be saved by the bell and rendered unconscious at the conclusion of the bout.
Big John McCarthy offers a referee course for anyone interested in knowing the rules of MMA. His next course is scheduled to take place at Xtreme Couture during the International Fight Week of July which will coincide with UFC 226. The main event of UFC 226 will be Daniel Cormier Vs. Stipe Miocic
Right outcome with Simon winning, wrong call as far as TKO #AskBJM https://t.co/IuxZ4n1wHd
— Big John McCarthy (@JohnMcCarthyMMA) April 22, 2018
How do you have a TKO on a Submission win??? Come on @arielhelwani you know that can’t be right. https://t.co/2biQh5mkzi
— Big John McCarthy (@JohnMcCarthyMMA) April 22, 2018
Latest from the blog
Friday, 2nd Oct, 2026
UFC 332 Preview: Natalia Silva vs. Wang Cong Headlines Championship Night in Salt Lake City
PFL-MVP Shakeup Creates New Questions for MMA Free Agents
Bitcoin Genesis Block Explained: What Satoshi’s First Block Really Means
The Future of Brain Health in MMA
Heather Hardy’s $10 Million Lawsuit Exposes Most Valuable Promotions’ Pattern of Prioritizing Spectacle Over Safety