'Nobody has ever done that to me': Kell Brook well beaten by Terence Crawford

• American retains welterweight title in Vegas to move to 37-0
• Katie Taylor wins unanimous decision over Miriam Gutierrez

Terence Crawford started slow and finished fast, stopping Kell Brook with a barrage of punches in the fourth round Saturday night to retain his welterweight title in Las Vegas.

Crawford remained unbeaten and kept his place on the pound-for-pound best list with an impressive stoppage of the British fighter, who fought well for three rounds before succumbing to Crawford's power.