A distracted Murray, who bizarrely clipped his fringe with a pair of scissors during one changeover early on, capitulated, but only after Nadal had softened him up with the kind of ferocious hitting that earned him 14 grand slam titles.
Ripping forehands to all corners of the court and moving smoothly, the 29-year-old dominated throughout to qualify for the semi-finals with a match to spare and leave Murray facing a Friday decider against Stanislas Wawrinka.