World No 1 Jannik Sinner has been forced to pull out of the Cincinnati Open due to a knee injury, sparking concerns over his readiness for the upcoming US Open. Sinner, who has not competed since his Wimbledon title defense in July, made the announcement after consulting with his medical team.

The injury has prevented him from competing in the National Bank Open in Montreal and now the Cincinnati Open, where he had hoped to avenge his defeat to Carlos Alcaraz in the 2025 final. Sinner expressed disappointment at missing the Cincinnati Open but is now focusing on his recovery and preparation for the US Open, which begins on August 30. The Cincinnati Open is set to start on Tuesday, with live coverage on Sky Sports, while the US Open will also be broadcast live on Sky Sports from August 30.