Which boxer defeated Donald Curry in 1986 to win the undisputed welterweight championship?

Lloyd Honeyghan defeated Donald Curry in 1986 to win the undisputed welterweight championship.

The fight took place on 27 September 1986 at Caesars Atlantic City in New Jersey. Curry was an undefeated American champion widely regarded as one of boxing’s best pound-for-pound fighters, while Honeyghan was a British challenger who held regional titles and was a heavy underdog.

Honeyghan dominated the contest and won when Curry’s corner retired him after the sixth round. The victory gave Honeyghan the WBA, WBC, IBF and The Ring welterweight titles, making him the undisputed champion at 147 pounds.

The result was one of British boxing’s notable upsets. Curry’s pre-fight insult, “Ragamuffin,” helped inspire Honeyghan’s nickname, the “Ragamuffin Man.” Honeyghan later relinquished the WBA belt because of its policy toward apartheid-era South Africa, ending his undisputed reign.