The Kremlin Cup tennis tournament in Moscow has lost its top-two women's seeds, after No. 1 Frenchwoman Amelie Mauresmo lost her quarterfinal match and second-seeded Russian Maria Sharapova withdrew with an injury.
Mauresmo was upset by eighth-seeded teenager Nicole Vaidisova Friday, after the Czech bounced back from a first set loss for a 1-6, 7-5, 7-6 win. Vaidisova was just one game from losing the match before rallying to beat Mauresmo for the second straight time.
On Saturday, Vaidisova will play fifth-seeded Russian Nadia Petrova, who advanced to her second straight semifinal with a 7-5, 6-1 win over compatriot Vera Zvonareva.
Anna Chakvetadze of Russia advanced to the semifinals on a walkover when Sharapova withdrew before their match with a foot injury. Chakvetadze will face fourth-seeded countrywoman Elena Dementieva, who defeated number-six Patty Schnyder of Switzerland, 7-6, 7-6.
In the men's draw, top-seeded Russian Nikolay Davydenko defeated Max Mirnyi of Belarus, 6-3, 7-5. He will play seventh-seeded Fabrice Santoro in the semifinals, after the Frenchman scored a 6-3, 7-5 victory over Philipp Kohlschreiber of Germany.
The other semifinal, wild card Igor Kunitsyn will face fellow-Russian Marat Safin. Kunitsyn ousted Frenchman Arnaud Clement, 6-4, 6-2, while Safin needed three sets to get past Janko Tipsarevic of Serbia, 7-6, 3-6, 6-4.