Badou Jack blasted Dervin Colina to the canvas on three occasions to secure a fourth-round stoppage victory in Miami on Sunday
The two-weight world champion had been set to challenge for a WBA belt, but Jean Pascal tested positive for banned substances and Jack instead ruthlessly stopped replacement opponent Colina at the Hard Rock Stadium.
Jack quickly highlighted the gulf in class, landing cleanly from the opening bell, and Colina was deducted a point as early as the second round as he clung on desperately.
The Venezuelan lost another point for holding in the third and the fight was mercifully halted in the following round.
Jack dropped Colina by the ropes and then bludgeoned him back to the canvas twice more before the fight was waved off. (SkySports)
