
Serena Williams, right, appreciates her professional rivalry with Victoria Azarenka.
Serena Williams, right, appreciates her professional rivalry with Victoria Azarenka.
Serena Williams 'definitely ready' to defend her US Open tennis title
But world No 1 expects to face tough opponents not least Victoria Azarenka, the world No 2, who beat her in Cincinnati final.
Agence France Presse
August 21, 2013