James J. Braddock vs. Joe Louis was a professional boxing match contested on June 22, 1937, for the undisputed heavyweight championship.

[3] In the opening round, a close range exchange of punches ended with Louis being knocked down by an uppercut, but eventually recovered.

Joe Gould, Braddock's manager, wanted to end the fight but the champion convinced him to continue.

[4] This fight began an unprecedented reign by Louis that included an over 12-year continuous run as champion, winning 25 consecutive title defenses.

Louis would later defeat top contender Max Schmeling by first-round knockout the following year, avenging his only loss up to that point.