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Peter Quillin had Andy Lee on the canvas twice before the Limerick man reciprocated at the Barclays Centre in Brooklyn. A big right hook from Lee had the American on his knees, it marked a real momentum shift in the fight.
The WBO Middleweight title holder would go on to pull off a remarkable comeback with the official decision being a split draw.
The judges scored it 113-112, 112-113 and 113-113.