David Ferrer sets up Andy Murray quarter-final after beating Juan Martin del Potro David Ferrer booked a place in the Wimbledon quarter-finals when his renowned tenacity gave him a 6-3 6-2 6-3 victory over Juan Martin del Potro in the fourth round today. The Spanish seventh seed wasted few of his break points after a long opening game in which the ninth-seeded Del Potro failed to convert four of them. That looked likely to set the scene for a long tussle on Centre Court but it merely served to underline Ferrer's willingness to scrap for every point. Ferrer gave former U.S. Open champion Del Potro little chance to settle and the Argentine committed a string of unforced errors as he went down in one hour 43 minutes. Ferrer faces home hope and fourth seed Andy Murray in the last eight.