Top seed Nikolay Davydenko beat Max Mirnyi of Belarus 6-3, 7-5 to reach the semifinals of the Kremlin Cup here on Friday.
Davydenko will take on Fabrice Santoro after the Frenchman after defeating Germany's Philipp Kohlschreiber 6-3, 7-5.
In the women's matches, U.S. Open champion Maria Sharapova was forced to pull out of her quarter-final with a foot injury.
Former world number one Marat Safin of Russia will meet Serbian Janko Tipsarevic in the quarter-finals later while Igor Kunitsyn plays Arnaud Clement.
Anna Chakvetadze moved into the semi-finals without hitting a ball when Sharapova withdrew injured.
Nadia Petrova reached the semifinals with a 7-5, 6-1 win over Vera Zvonareva.
Source: Xinhua