World No 1 Novak Djokovic and defending champion Andy Murray produced contrasting performances to secure their berths in the quarter-finals of the Madrid Masters on Thursday.
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Djokovic notched up his 30th win of the season by claiming a 6-2, 6-1 win over Spain's Roberto Bautista Agut, while Murray trounced 16th seed Gilles Simon 6-4, 6-2 to reach the last eight of the clay-court event.
The resurgent Rafael Nadal also remained on course as he eased past Sam Querrey in straight sets.
Nadal stretched his perfect start to the European clay-court season to 12 matches as he fought back from going down an early break to beat Querrey 6-4, 6-2.
"Today the way I played gives me a lot of satisfaction. I'm just hoping I can continue playing this well tomorrow," Djokovic said.
The Serb will continue his quest for a fifth title of the season against Milos Raonic as the big serving Canadian dumped out seventh seed Jo-Wilfried Tsonga 6-4, 6-4.