London: Frenchman Richard Gasquet upset Swiss No. 4 seed Stanislas Wawrinka 6-4, 4-6, 3-6, 6-4, 11-9 here to reach the Wimbledon semi-finals for the second time in his career.

In a clash pitting two players best known for their powerful and stylish one-handed backhands, Gasquet proved to be more solid and consistent than the reigning French Open champion, who committed double the number of unforced errors (48 to 24) over the course of the three-hour, 28-minute contest on Wednesday.