In the early matches, fifth-seeded Amelie Mauresmo eliminated Russian Tatiana Panova in straight sets 6-4 6-3.

BBC: Johansson crashes out in Moscow

Frazier recovered from a shaky start to beat sixth seed Tatiana Panova of Russia 2-6 6-1 6-4 in the day's first quarter-final.

BBC: Ruthless Serena deals with Pratt

The women's 2011 winner Sam Stosur was drawn against Croatia's Petra Martic, with top seed Victoria Azarenka playing world No. 74 Alexandra Panova.

CNN: Tennis legends tip Murray for grand slam glory at U.S. Open