Overview
- Sinner announced he pulled out of the Cincinnati Open because his right knee has been bothering him after consulting with his doctors and team.
- The withdrawal was confirmed by tournament organisers and by Sinner in a statement posted on the ATP site on Sunday, Aug. 9.
- He already missed the Canadian Open and has not played since defending his Wimbledon title in July, so he would enter the US Open with little or no recent hard‑court match practice if he goes to New York.
- Carlos Alcaraz has also withdrawn from Cincinnati with a persistent wrist problem, a pair of absences that significantly weakens the North American warm‑up events and changes expectations for the US Open build‑up.
- Italian media reported Sinner had extended medical checks in Milan and was undergoing rehab at JMedical in Turin, but no detailed medical findings or a final decision on his US Open participation have been released.