WBO welterweight champion Terence Crawford retained his WBO welterweight title after his fight with Amir Khan was stopped due to a technical knockout in the sixth round on Saturday night in New York.

Khan had fallen behind early on, appearing to lose each of the opening three rounds after suffering a knockdown in the first.

A promising start in which his speed troubled Crawford quickly became a struggle to survive after he was hurt by a right hand and then floored by a left.

He appeared to have recovered by the end of the second, but despite occasionally landing is yet to enjoy periods of sustained success.

Khan could no longer continue after a low blow, so he was ruled the loser via TKO after 47 seconds of the sixth.

He had already begun to struggle with what appeared to be an injured right arm, and was taking regular punishment before he was withdrawn following Crawford’s low blow.