David Ferrer, Andy Murray into last eight of Vienna Open

Top seed Ferrer, who beat second seed Murray en route to the last eight of the Shanghai Masters last week, made short work of Tobias Kamke, overcoming the German 7-5 6-1.

“The first set was difficult. Only after I won that set did I play better – a more solid and more consistent game,” Ferrer said.

Meanwhile, Murray secured his spot in the quarters with a 6-4 6-4 victory over Canadian Vasek Pospisil.

Having taken the first set the British world number 11 let slip a 3-1 lead in the second, but recovered to break Pospisil for a third time and then set up a clash with Jan-Lennard Struff of Germany, who beat Ukrainian Sergiy Stakhovsky in a three-set contest that lasted two hours and 25 minutes.

Two seeds did exit the ATP 250 hard-court tournament, though, as Feliciano Lopez and Lukas Rosol both crashed out.

Third-seeded Spaniard Lopez threw away a one-set lead in a 6-7 (9-11) 6-1 6-4 defeat to Thomaz Bellucci, while Czech fifth seed Rosol was defeated in just 54 minutes by Serbian qualifier Viktor Troicki.

Troicki sent down 12 aces in a 6-3 6-2 triumph to reach his second quarter-final in four weeks.

Elsewhere in the draw Benjamin Becker cruised to a 6-3 6-3 success over Robin Haase.