Azarenka out of Cincinnati event with knee injury

MASON, Ohio (AP) Defending champion Victoria Azarenka has withdrawn from the Western & Southern Open because of a right knee injury.

The WTA says Azarenka withdrew after practicing on Tuesday. Azarenka was replaced in the draw by Mona Barthel.

Azarenka injured her knee in her first-round win at Wimbledon and played in two tournaments after the grass-court major.

She hopes to be ready for the U.S. Open, which starts Aug. 25.

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide—from Peter King, Tom Verducci, Lee Jenkins, Andy Staples, Grant Wahl, and more—delivered straight to you, along with up-to-the-minute news and live scores.