MGM Grand Conference Center, Las Vegas - WBO welterweight champion Terence Crawford (37-0, 28 KOs) made a statement as he overcame a slow start and then wiped out former IBF titleholder Kell Brook (39-3, 27 KOs) in the fourth round.

At the time of the stoppage, Brook was ahead on two of the three official scorecards.

Crawford was doing better in the third with the southpaw stance. In the fourth, a big right hand dropped Brook as he was stumbling backwards with ropes holding him up. Once the action restarted, Crawford began to batter Brook with punches and the fight was waved off.