World number one Roger Federer made light work of South Korean Lee Hyung-taik to reach the Monte Carlo Masters Series quarter-finals with a 6-4 6-3 win on Thursday.
He now meets claycourt specialist David Ferrer after the Spaniard recovered from a sluggish start to knock out sixth seeded Serb Novak Djokovic 7-5 6-4.
Federer, who arrived in Monte Carlo with back-to-back defeats by Argentine Guillermo Canas in Miami and Indian Wells, broke decisively in the ninth game of the opening set to take control.
After that, the Swiss who has 10 Grand Slams to his name but has yet to win the French Open, was never in bother and clinched victory in 64 minutes.
Czech prospect Tomas Berdych fought back from a set down to advance with a 1-6 6-3 6-2 victory over fifth seeded Spaniard Tommy Robredo.
The 10th seed faces a last-eight encounter against Sweden's Robin Soederling, who had earlier battled to a 7-6 6-2 victory over Max Mirnyi of Belarus.
The 21-year-old Berdych was overwhelmed by claycourt specialist Robredo in the opening set, which the Spaniard clinched in 36 minutes, before an early break in the second was enough to force a decider.
Berdych, who reached the fourth round at last year's French Open, broke twice and wrapped up the win on his first match point.
World number 28 Soederling recovered from an early break to force a tiebreak, which he won 7-5, before stepping up a gear in the second set.
Soederling converted three of his nine break chances in all to seal victory in 88 minutes on his first match point.
Later on Thursday, holder Rafael Nadal will hope to extend his record 63-match winning streak on clay against Belgium's Kristof Vliegen.