American Terence Crawford became the undisputed junior welterweight champion of the world on a night that also saw British heavyweight Dillian Whyte win his first fight on US soil.

Crawford, on home turf in Lincoln, Nebraska, knocked out Julius Indongo in the third-round to become only the second male boxer to unify the four major organisation titles since Bernard Hopkins beat Oscar De La Hoya at middleweight in 2004.

Crawford (32-0) had already knocked Indongo to the canvas once in the second round, but sealed victory in the third with a huge left hook to the body.

Crawford celebrates his victory in Lincoln, Nebraska (Nati Harnik/AP)Crawford celebrates his victory in Lincoln, Nebraska (Nati Harnik/AP)

Crawford came into the fight with the WBC and WBO belts, while Namibian Indongo (22-1) held the WBA and IBF titles.

Earlier in the evening, Whyte stopped Malcolm Tann in three rounds.

Whyte (21-1) was fighting for the first time since his victory over Dereck Chisora in December.

He dominated the bout against Tann, using a right-left combination to drop the 38-year-old for a fourth and final time.

The 29-year-old Whyte is hoping the victory will now set him up for a fight against WBC world heavyweight champion Deontay Wilder.