World number one Novak Djokovic moved into the Madrid Open quarter-finals by continuing his domination over France's Jeremy Chardy.
The 31-year-old Serb was eventually pushed by Chardy in the second set before earning a 6-1 7-6 (7-2) win.
Djokovic still has not dropped a set against the world number 47, having won all 13 of their meetings.
Roger Federer and Rafael Nadal will look to join Djokovic in the last eight later on Thursday.
Switzerland's Federer, making his clay-court return after a three-year absence, will play France's Gael Monfils, while Spain's Nadal continues his pursuit of a sixth title against American Frances Tiafoe.