The Ultimate Encyclopedia of Boxing is the world's most comprehensive single-volume illustrated work of boxing reference, covering all aspects of the sport since its rise from the days of illegal big-money challenge matches to the multi-million-dollar televised extravaganza it is today.

As well as details of the careers of the world's greatest boxers, and descriptions of many of the outstanding fights, it traces the progress of the world title from champion to champion in all the weight classes, outlines the status of boxing around the world, considers the prominent figures behind the scenes such as promoters, trainers and managers, recalls some of the great stadiums where boxing history was made, and details the administrative bodies, the rules, the culture and ambience of the fight game, including its occasional tragedies, along with its scandals. A statistical section lists the facts, figures and oddities of the sport.

Fully revised and updated to include all the world title fights up to March 2020, there are new biographies and features on the recent big changes in the sport.