World No. 1 Jannik Sinner Withdraws From Cincinnati Open, Putting US Open in Doubt

World number one Jannik Sinner has pulled out of the upcoming Cincinnati Open, according to an announcement made by tournament organizers on Sunday.

“Following discussions with my medical staff and coaches, I must share the news that I am pulling out of the Cincinnati Masters 1000 event,” Sinner explained in an official statement released by the tournament.

“I have been experiencing issues with my right knee, and despite the dedicated efforts of my physical therapy team, I must face the reality that I am not yet fit to play,” he went on to say.

With the Cincinnati Open set to run from August 11 through August 23, the event wraps up just a week prior to the start of the US Open main draw. This timing raises doubts about whether Sinner will be able to participate in the final Grand Slam of the year, which he claimed in 2024.