Hearns began his professional boxing career in Detroit, Michigan, under the tutelage of Emanuel Steward in 1977. Steward had changed Hearns from a light hitting amateur boxer to one of the most devastating punchers in boxing history.

He won six world titles in five weight classes during his pro career, defeating future boxing hall of famers such as Pipino Cuevas, Wilfred Benítez, Virgil Hill and Roberto Durán. Hearns started his career by knocking out his first 17 opponents. In 1980, Hearns carried his 28-0 record into a world title match against Mexico's Pipino Cuevas. Hearns ended Cuevas's 4-year reign by beating him by TKO in the second round. Hearns was voted "Fighter of the Year" by Ring Magazine in 1980.

He is the great fighter