2026 U.S. Open: World No. 1 Jannik Sinner withdraws from final grand slam tournament with knee injury

World No. 1 Jannik Sinner has withdrawn from the 2026 U.S. Open due to a knee injury, marking his absence from the final Grand Slam tournament of the season. The Italian has not competed since winning the Wimbledon title in London earlier this year. His withdrawal leaves the U.S. Open without its top-ranked player and reigning Wimbledon champion.