It was nice going in the 1st 2 rounds with Kell Brook trying to attack once in a while. But in the 3rd round WBO champion Terrence Crawford unleashed his power punches that gave Brook something to think of. In the 4th round the relentless attack of Crawford made Brook to be losing his composure and that was the end according to the referee. Crawford remains undefeated with 37 wins and 28 KOs while Brook has a fight record of 39-3 and 27 KOs.