Unbeaten English heavyweight Anthony Joshua stopped Jason Gavern in round three to record an 11th successive victory since turning professional.
The 2012 Olympic gold medallist, 25, wore down his opponent with some heavy punching, putting the 37-year-old on the canvas three times in the third.
Joshua said: "Expectations were high and Jason was an awkward opponent."
Later at Newcastle's Metro Radio Arena, Anthony Nelson won the vacant Commonwealth super-flyweight title.
The 29-year-old from South Shields beat 23-year-old Scot Jamie Wilson, who retired on his stool at the end of the sixth round.
Joshua, meanwhile, will next face Kevin Johnson on 30 May after pulling out of a scheduled contest with the American in January because of a back injury.
He said: "I was a bit ring-rusty and was not able to display all I've been doing at the gym."
Elsewhere, Canadian Adonis Stevenson retained his WBC light-heavyweight world title with a unanimous points victory over Sakio Bika in Quebec City.
Stevenson, 37, took his career record to 26-1 with a 115-111, 116-110 and 115-110 win on the scorecards.
Australian Bika's defeat was the 35-year-old's seventh in 42 fights.