Overview
- Sinner announced he would not play the US Open on August 21 because of a recurring right-knee problem and went back to J Medical in Turin for fresh tests and therapy on August 25.
- He has not competed since winning Wimbledon on July 12, which remains his last match, and the knee issue already forced him to skip the Masters 1000 events in Montreal and Cincinnati.
- Despite the break, Sinner remains ATP world No.1 after a season that includes multiple Masters 1000 titles and a Wimbledon win.
- There is no firm comeback date; coaches Darren Cahill and Simone Vagnozzi are working with J Medical and the player on a cautious plan that targets Beijing and Shanghai as possible return windows but does not guarantee them.
- His absence affects late-season title defenses and year-end goals and has intensified discussion about elite players’ workload and injury management following public comments from Roger Federer.