Top-ranked tennis player Jannik Sinner has announced his withdrawal from the US Open, citing a knee injury that has hindered his ability to compete. In a statement, Sinner expressed his disappointment, stating that the decision was difficult and expressing hope for a swift recovery. This withdrawal marks a significant loss for the tournament, as Sinner was a favorite to perform well. His absence comes as rival Carlos Alcaraz is set to return to action after a lengthy injury hiatus.