Jannik Sinner, the world’s top-ranked men’s tennis player, withdraws from the Cincinnati Open due to a knee problem. Multiple outlets report the issue is in his right knee, with Sinner citing medical advice and saying he is not ready to compete.

The withdrawal means neither Sinner nor defending US Open champion Carlos Alcaraz plays in the Cincinnati warm-up tournament, according to reporting that frames the decision around preparations for the US Open later this month. BBC Sport also says Sinner expects to be fit to play the US Open, while other outlets note the move raises questions about his availability and comes as ATP events in the lead-up already face star withdrawals because of injuries. Reuters and similar coverage across outlets emphasize the immediate impact on Cincinnati, while the longer-term focus remains whether Sinner can recover in time for the US Open start date.