French qualifier Paul-Henri Mathieu produced a stunning comeback to claim the Kremlin Cup with victory over Sjeng Schalken.

BBC: Mathieu claims shock win

Meanwhile, in the men's section, local favorite Marat Safin opened his final Kremlin Cup campaign by ousting defending champion and Shanghai Masters winner Nikolay Davydenko in the first round.

CNN: Kirilenko knocks Radwanska out of Kremlin Cup

"I have played against Radwanska three times before and I won twice so I can say I actually like to play her -- she's not very aggressive and I always have enough time to hit winners, " Kirilenko told the Kremlin Cup Web site.

CNN: Kirilenko knocks Radwanska out of Kremlin Cup