Dillian Whyte (25-1, 18 KOs) eked out a split decision in his epic December 2016 encounter with Dereck Chisora (29-9, 21 KOs), but in their rematch two years later, Whyte was able to get the KO... and he might have needed it in order to win the fight.
Behind on two of the three scorecards despite Chisora being docked two points for fouls, Whyte was able to wreck Chisora with a massive left hook in the 11th round to get the KO win. Why the referee counted to ten when Chisora was totally out of it is beyond me, especially with people already in the ring.