Serena Williams of the U.S. reacts to her play against Victoria Azarenka of Belarus during their championship match at the women's Cincinnati Open tennis tournament in Cincinnati, Ohio August 18, 2013. REUTERS/John Sommers II
(Reuters) - World number one and defending champion Serena Williams has been given the top seeding for the U.S. Open, organisers announced on Tuesday.
Belarussia's Victoria Azarenka, who beat Williams in Sunday's final of the Cincinnati Open, is the second seed ahead of Maria Sharapova of Russia and Poland's Agnieszka Radwanska.
