Pennetta knocks out third seed Jankovic in Stuttgart

STUTTGART, Germany, (Reuters) – Italian Flavia  Pennetta caused an upset by beating third seed Jelena Jankovic  2-6 6-4 6-4 in the Stuttgart Grand Prix quarter-finals yesterday.

The unseeded Pennetta’s reward is a last-four meeting with  Dinara Safina after the world number one swept aside Pole  Agnieszka Radwanska 6-4 6-2.

Russian Safina, who went to the top of the rankings last  week, dominated the eighth seed with a series of thunderous  groundstrokes.

Second seed Elena Dementieva went through with a 6-2 4-6 6-3  victory over Marion Bartoli of France.
The Russian next meets countrywoman Svetlana Kuznetsova  after the fifth seed overwhelmed Argentine Gisela Dulko 6-3 6-2.

Dementieva and Bartoli traded early breaks before the world  number three started going to the net more often as she clinched  the first set in 31 minutes.    Bartoli produced some deft baseline play to break serve  twice in the second.
However, there was no looking back for Dementieva after she  raced into a 4-0 lead in the deciding set.