World No. 1 Jannik Sinner has withdrawn from the US Open due to a right knee injury, ruling him out of the year's final Grand Slam tournament. The Italian said he had been working closely with his team and medical staff, but was ultimately forced to pull out, describing himself as "sad and disappointed" about missing the event.

The withdrawal is a significant blow for the tournament, as Sinner is the top-ranked men's player and one of the sport's biggest current stars. Details on the precise nature and severity of the knee injury, along with his expected recovery timeline, were not fully specified in the announcement.