Marvelous Marvin Hagler vs. Thomas Hearns, billed as "The War" (originally billed as "The Fight"), was a world middleweight championship boxing match between undisputed champion Marvin Hagler and challenger Thomas Hearns, who was himself the world's junior middleweight champion. The fight is considered by many to be among the finest boxing matches in history, due to its constant action, drama, and back-and-forth exchanges. Hagler won the fight by knockout in the third round.