The best men’s tennis player in the world is missing the final Grand Slam of the year.

World No. 1 Jannik Sinner announced Friday that he will miss the US Open due to a right knee injury. Sinner has not played since winning Wimbledon last month.

“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,” Sinner wrote on social media.

“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. I’m obviously very sad and disappointed, as New York has a special place in my heart. I was very much looking forward to coming back and playing in the electric atmosphere in front of the great fans there.”

Sinner, 25, a five-time Grand Slam champion, won the US Open in 2024.