Updated

By Matthew Cronin

STANFORD, California (Reuters) - Newly-crowned Stanford Classic champion Victoria Azarenka of Belarus has pulled out of next week's tournament in San Diego, her agent said Sunday.

Former world number one Jelena Jankovic is top seed at the tournament, followed by fifth-ranked Samantha Stosur of Australia, Russia's Vera Zvonareva and Poland's Agnieszka Radwanska.

(Editing by Ian Ransom)