Ken Regan was a young photographer in 1964 when he covered Muhammad Ali’s first fight: his historic victory over Sonny Liston in Miami Beach. This began a lifelong love affair with the sport of boxing. For the next four decades, Regan chronicled the greatest fights and fighters of the age. His extraordinary photographs include many of the most enduring images ever created in the annals of boxing, as well as portraits of notable trainers, managers, promoters, writers, and the whole panoply of celebrities associated with the sport. Featuring some of the greatest ring action in boxing history, Knockout takes us from sparring sessions and press conferences to weigh-ins and post-fight sessions.

Knockout also features Regan’s stories and firsthand account of his photographic journey into the heart of boxing. Beginning with his early magazine work shooting prizefights, Regan developed close personal friendships with some of the greatest boxers and captured intimate moments of these fighters with their families at home and on the road. With numerous black-and-white and color images, many seen here for the first time, Knockout is one of the most celebrated books ever published on the subject of boxing.