Heavyweight boxing championship records and statistics only universally recognized form of a world championship until July 2, 1921, when Jack Dempsey became the inaugural NBA Heavyweight Champion. The growing popularity of boxing led to a birth of various regional sanctioning organizations, with each recognizing their own champion. The major governing bodies were the National Boxing Association, formed in 1921, the New York State Athletic Commission, found after the Walker Law legalized prizefighting in New York in 1920, and the International Boxing Union, created in 1911 in Paris in attepmt create a unified international governing body for professional boxing. Both NBA and NYSAC made then-lineal champion Jack
Light heavyweight heavyweight division and became undisputed champion of the latter two. Dariusz Michalczewski holds the record for most consecutive title defenses at this division, with 23 defenses of the WBO title. Current champions Below is a list of longest reigning light heavyweight champions in boxing measured by the individual's longest reign. Career total time as champion (for multiple time champions) does not apply. In MMA, the light heavyweight division is from 186 lbs (84 kg) to 205 lb (93 kg). Light heavyweight Light heavyweight, or junior cruiserweight, is a weight class in combat sports. In amateur boxing, light heavyweight is a