What Is Actually Wrong With Sinner's Knee
Jannik Sinner's absence from the 2026 US Open left the tennis world searching for answers, and a report from Sky Sport Italy has now filled in some of the blanks. According to the Italian broadcaster, the world No. 1 is dealing with extra-articular tendon inflammation in his right knee, described in the report as the least serious category of knee tendon problems. The condition is treated primarily through rest and physical therapy, meaning Sinner does not require surgery, which will come as a relief to his supporters.
The right knee had apparently been bothering him for some time. Sinner skipped the Canadian Open before withdrawing from the Cincinnati Open, and last week he confirmed he would miss the US Open as well. In a heartfelt statement, he noted that New York holds a special place for him, making the decision to withdraw all the more difficult. He has been receiving treatment at JMedical in Turin and recently returned to court in Monte Carlo, only to realize he still was not ready to compete at full intensity.
The Road Back and What Comes Next
Sky Sport Italy noted that while pushing through the US Open would not have been completely out of the question physically, doing so would have been unwise given the demands of the remainder of the season and his longer-term health. The smarter play is patience.
The primary target for his return, according to the report, is the Asian hardcourt swing, specifically the China Open in Beijing, which begins September 30, and the Shanghai Masters shortly after. Sinner is the reigning Beijing champion, giving him extra motivation to be fit in time. With roughly a month remaining before that event, the timeline looks manageable if his recovery continues to progress.
TennisDraw users tracking Sinner's bracket prospects will want to keep a close eye on any fitness updates before his expected return in China.
