Azarenka pulls out of San Diego

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

Azarenka won her first title of the year by beating Russia's Maria Sharapova 6-4 6-1 on Sunday, but her agent said the Belarusian had sustained a right shoulder injury and would skip San Diego.

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.