Sinner sidelined until September 6 as knee injury lingers
World No. 1 Jannik Sinner is reportedly sidelined until September 6 due to persistent knee tendon inflammation. The injury has already cost him three tournaments, including his US Open title defence, and now threatens to reshape his season’s end.
Jannik Sinner, Rome 2026 | © FITP
Jannik Sinner’s troubled summer will stretch deep into the autumn. According to Italien newspaper Gazzetta dello Sport, the world No. 1 has been ordered to rest until September 6 as he battles persistent inflammation in the tendon of his right knee, a problem that has already cost him three tournaments (including the US Open) and now threatens to reshape the closing months of his season. The Italian is unseen on Tour since lifting the Wimbledon title on July 14th.
What began as a precautionary stop for a sore knee has proven more stubborn than expected, forcing withdrawals from the Canadian Open in Montreal, the Cincinnati Open and, most painfully, his US Open title defence. Following the latest round of tests, Gazzetta reports that Sinner faces more than ten days away from the racket entirely – no training, no hitting – in a bid to finally quiet the inflammation that treatment has so far failed to resolve.
The recovery is being managed at J-Medical in Turin, the clinic where Sinner has based his rehabilitation and where earlier reporting indicated he had undergone shockwave therapy on the affected area. Crucially, the injury is not said to require surgery. But with the Grand Slam season over, Sinner and his team have made caution the priority, unwilling to gamble his long-term fitness on a premature return.
The target now is the Asian swing. Gazzetta indicates that the tournaments in Beijing and Shanghai are the objective, with a comeback pencilled in towards the end of September if the tendon responds to the enforced rest. For a player who has spent the year fighting a series of physical setbacks, from dehydration and dizziness at Roland Garros to this recurring knee trouble, it represents another test of patience as much as fitness.
