World No. 1 Jannik Sinner has withdrawn from the upcoming US Open due to a knee injury, organizers announced. The decision comes just days before the tournament is set to begin in New York.

Sinner, 25, shared the news in a statement on social media, describing the withdrawal as a "difficult decision" made with his medical staff. "Even though I have been working hard with my team and my medical staff, we have now had to make the difficult decision that I will not be able to compete at the US Open this year," the statement read. "We have been back on court in Monte Carlo over the last couple of days and have realised that I still need more time to recover from my right knee issue."

The Italian expressed his disappointment, noting New York's special place in his heart and his anticipation of playing in the "electric atmosphere" before the fans. Sinner, who turned professional in 2018, has maintained a streak of playing in every Grand Slam tournament throughout his career. He has won five Grand Slam titles, including the US Open two years ago and Wimbledon this summer.

This season, Sinner has been dominant, winning the first five ATP Masters 1000 events, including tournaments in Indian Wells and Miami. He reached the final of the US Open last year, where he was defeated in four sets by Carlos Alcaraz. Alcaraz, who has also been managing an injury, is expected to return to competition at the US Open after a four-month layoff due to a wrist injury.

Fan week for the US Open is scheduled to commence in two days, with the main draw beginning a week from Sunday. Sinner plans to remain in Europe to continue his rehabilitation and aims to return for tournaments in Beijing and Shanghai later in the season.