Maria Sharapova beats Nadia Petrova to reach U.S. Open quarterfinals . Sam Stosur has won 11 three -set matches in last 16 . you 're out on the court Marion Bartoli wins 11 of 13 games to secure 1 -6 , 6 -2 , 6 -0 win over Petra Kvitova . Sam Stosur ends 18-year-old Sam Stosur impressive U.S. Open run with a 13 -4 6-4 win .
Maria Sharapova beats Nadia Petrova to reach U.S. Open quarterfinals . Sam Stosur has won 11 three -set matches in last 16 . Marion Bartoli wins 11 of 13 games to secure 1 -6 , 6 -2 , 6 -0 win over Petra Kvitova . Sam Stosur ends 18-year-old Sam Stosur impressive U.S. Open run with a 13 -4 6-4 win .