Sinner withdraws from Cincinnati event, casting doubt on US Open readiness

World No. 1 Jannik Sinner has withdrawn from

World No. 1 Jannik Sinner has withdrawn from the Cincinnati Open due to a right knee issue, a setback that could disrupt his buildup to this month's US Open.

The Italian star cited the injury as a decisive factor, stating he was 'not ready to compete' at the level required for the hard-court tournament. The decision comes just weeks before the season's final Grand Slam, where Sinner was expected to be a leading contender.

Sinner's camp confirmed the injury is not believed to be severe, but the player and his medical team opted for caution to avoid aggravating the problem. The 23-year-old had been scheduled to headline the Ohio event after a strong summer stretch.

This withdrawal marks the second major tune-up event

This withdrawal marks the second major tune-up event Sinner has missed recently, following his absence from the Montreal Masters earlier this month. That pattern has raised questions about his match fitness heading into New York.

The US Open, which begins on August 26, remains Sinner's primary target, and his team is optimistic that the extra recovery time will allow him to return at full strength. Fans and analysts will be watching closely for any further updates on his condition in the coming days.