In-form Kyrgios marches on in Madrid

Nick Kyrgios has continued his sparkling form ahead of this month's French Open with a hard-fought three-set win over Uruguay's Pablo Cuevas in the Madrid Open.

The Australian slammed down 14 aces in a high quality encounter against the clay court specialist who is ranked 27th in the world to prevail 7-6 (7-5) 4-6 6-3.

Kyrgios will face world No.6 Kei Nishikori in the quarter-finals on Friday after the Japanese star beat Richard Gasquet 6-4 7-5.

Novak Djokovic and Andy Murray also made their way into the last-eight, each with straight-set wins.

The top-ranked Djokovic beat Roberto Bautista Agut 6-2 6-1 for his 30th win of the season, the most on tour.

Defending champion Murray defeated Gilles Simon 6-4 6-2 while Tomas Berdych beat David Ferrer 7-6 7-5.