Gervonta Davis had the last laugh in his rivalry with Rolando Romero as he scored a one-punch knockout in the sixth round to remain undefeated.
Romero walked straight onto the left hand of 'Tank' with just over 30 seconds left in the sixth round. He was sent crashing face-first to the canvas and did get back to his feet to beat the count, but the referee David Fields waved off the fight.
Davis, who made the third defence of his WBA lightweight title with the win, was not having it all his way in the lead up to the knockout. Romero was out-landing the champion and was up by one round on judge Kevin Morgan's scorecard at the time of the stoppage.