Sinner said despite working hard with his team and medical staff, the “difficult decision” had been made to rule him out of the grand slam which starts on Sunday.

NUEVA YORK (AP) — El número uno mundial Jannik Sinner se retiró del Abierto de Estados Unidos el viernes debido a una lesión en la rodilla derecha.

The world No. 1 has been managing the injury since Wimbledon.

World No. 1 men’s tennis player Jannik Sinner, who hasn't played since winning Wimbledon in July, will miss the US Open.