Rafael Nadal recovered from a poor start to coast past Federico Delbonis in his first singles match in eight months in the second round of the VTR Open in Chile.
Nadal made his return to competitive tennis on Tuesday alongside Juan Monaco in the doubles, but on Wednesday marked his first singles match since a shock second round defeat against Lukas Rosol at Wimbledon eight months ago.
The former world number one, who has been blighted by a knee injury and illness since then, overcame a tricky start to triumph 6-3 6-2.
Nadal was given a first round bye in Vina del Mar but he lost the first two games against his Argentine opponent on Wednesday.
The Spaniard stormed back, however, and shook off any fears of rust by taking 10 of the next 11 games before sealing his passage into the next round after 87 minutes.
There looked to be no signs the 11-time major winner was struggling with the injury that ruled him out for most of the last half of 2012.
Nadal was forced to abort his return from a knee problem in December after being struck down by a stomach virus - an illness which ruled him out of last month's Australian Open.
He is guaranteed to play a fellow Spaniard in the quarter-final, with Albert Montanes and seventh seed Daniel Gimeno-Traver playing on Thursday for the right to face the top seed.