Khabib Nurmagomedov has been named the most dominant fighter to ever compete in the octagon by 'Big' John McCarthy. However, the former referee detailed why the Russian cannot be called the ...

One of those men was Ron McCarthy, son of famed MMA referee, judge, and officiating instructor ‘Big’ John McCarthy. Like Crosby and fellow longtime adjudicator Chris Lee, Ron McCarthy turned ...

John McCarthy responds to Tank Abbott’s criticism (Source: Getty Images, X/MMA History Today) Retired MMA referee John McCarthy is one of the sport’s pioneers, although he has not fought in it.