The Scot produced one of his best ever performances despite a lacklustre past month to seal a 6-4 3-6 6-3 win.

Murray, 19, broke the third seed in the ninth game of the opening set and stayed in control to move in front.

Belgium's Kristof Vliegen won a third-set tie break to upset eighth seed James Blake 6-4 3-6 7-6 (7-5) in the second round of the Madrid Masters.

Blake came into the match having won back-to-back events in Bangkok and Stockholm, and five in total this year.