Roland Garros - US Open champion Samantha Stosur slugged her way through to the last 16 of the French Open with a 6-3 6-3 defeat of Russian Nadia Petrova in a baseline battle on Friday.
Australian sixth seed Stosur, the runner-up at Roland Garros two years ago, wasted little time and energy seeing off Petrova, who turns 30 next week, on Court One.
Though Stosur was a model of efficiency, the match had few highlights and one front-row spectator could be seen nodding off in his seat.
The 28-year-old Stosur now faces American Sloane Stephens, who beat Mathilde Johansson, the last Frenchwoman left in the draw, 6-3 6-2.