San Diego, California:
French Open runner-up Samantha Stosur of Australia was ousted from the 700,000-dollar WTA San Diego Open on Friday, losing a quarter-final 6-4, 6-3 to Italian fifth seed Flavia Pennetta.
Second seed Stosur joined Serbian top seed Jelena Jankovic and Russian third seed Vera Zvonareva on the scrapheap at the 700,000-dollar hardcourt tournament, a tuneup for the US Open that begins on August 30.
Pennetta fired seven aces and blasted 19 winners past Stosur to book a semi-final berth against the winner of a later match between Russia's Svetlana Kuznetsova and US teen Coco Vandeweghe.
The other quarter-finals pit Russian Alisa Kleybanova against Slovakia's Daniela Hantuchova and Poland's Agnieszka Radwanska against Israel's Shahar Peer.