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Cruiserweight, also referred to as junior heavyweight, is a weight class in professional boxing between light heavyweight and heavyweight. Before the advent of the current cruiserweight class, "light heavyweight" and "cruiserweight" were sometimes used interchangeably in the United Kingdom.

The current weight limit for the division is 200 pounds (14 stone 4 pounds / 90.7 kg). When originally established, the weight limit was 190 pounds (13st. 8 lbs. / 86.2 kg). The division was established in order to accommodate smaller heavyweight boxers who could not compete with the growing size of boxers in that division. While many great heavyweight champions (such as Rocky Marciano and Joe Louis) weighed around 190 pounds in their career, during the 1970s it became fairly standard that heavyweight boxers weighed 220 pounds or 230 pounds. It was felt by many boxing authorities that asking men weighing between 176 pounds and 190 pounds to fight these larger men was unfair.

The WBC was the first boxing organization to recognize the cruiserweight division when it sanctioned a bout between Marvin Camel and Mate Parlov on December 8, 1979, for their version of the title. That fight was a draw, but in the rematch in March 1980 Camel won and became the first cruiserweight champion. In 1982 the World Boxing Association recognized Ossie Ocasio as their first cruiserweight champion when he defeated South African Robbie Williams (although at that time the WBA called the division "junior heavyweight"). The International Boxing Federation followed suit in 1983 when it matched former WBC champion Marvin Camel against Rick Sekorski for their inaugural title. Camel won and became the first IBF cruiserweight champion.

Several boxers moved up to Heavyweight after winning world titles at Cruiserweight. Evander Holyfield unified the WBA, WBC, and IBF titles to become undisputed champion, the first to do so, and then moved up to the heavyweight division in 1988.

Other notable champions in the division have been Bobby Czyz, Tomasz Adamek, Virgil Hill, Al Cole, Orlin Norris, James Toney and David Haye.

Professional champions[]

Main article: List of cruiserweight boxing champions

Current champions

Sanctioning Body Reign Began Champion Record Defenses
WBA February 3, 2018 Russia Murat Gassiev 26–0–0 (19 KO) 0
WBC January 27, 2018 Ukraine Oleksandar Usyk 14–0–0 (11 KO) 0
IBF December 3, 2016 Russia Murat Gassiev 26–0–0 (19 KO) 2
WBO September 17, 2016 Ukraine Oleksandr Usyk 14–0–0 (11 KO) 4

Current interim champions

Sanctioning Body Reign Began Champion Record Defenses
WBA March 24, 2018 HoUqHZD.gif Arsen Goulamirian 23–0–0 (15 KO) 0