Top seed Rafael Nadal booked his spot in the quarter-finals of the Rio Open after beating Nicolas Almagro 6-3, 7-5.
Nadal, who is searching for his first title of the year, was in sizzling form early on in the first set as he raced out to a 4-1 lead after breaking Almagro in the fourth game. Almagro managed to reduce the deficit to 5-3, but Nadal recovered to clinch the first set.
The second set was a much closer affair as both players held serve for the first six games before five consecutive breaks of serve occurred, with Nadal edging ahead 6-5. The world number five managed to hold serve in the 12th game and converted match point on his first attempt to advance to the last eight.
Nadal will face Alexandr Dolgopolov in the quarter-finals after the latter came from behind to defeat Inigo Cervantes 3-6, 6-0, 6-3.
Meanwhile, second seed David Ferrer, Guido Pella, Pablo Cuevas and Federico Delbonis also progressed to the quarter-finals.