Australian Open finalist Rafael Nadal made a winning return to action as he toppled Daniel Gimeno-Traver at the Rio Open.
Nadal has not played since his defeat to Stanislas Wawrinka in Melbourne - with the Spaniard opting to rest a nagging back injury.
However Nadal, playing in his 800th match, showed no signs of discomfort as he overcame compatriot Gimeno-Traver 6-3 7-5 in one hour and 40 minutes.
Nadal, who now has a 670-130 record, will now tackle Albert Montanes after the world No 72 ousted Robin Haase 6-1 7-6 (7-4).
Another Spaniard, David Ferrrer, also registered a straight-sets win - with the second seed downing Jeremy Chardy 6-2 6-3.
It proved to be a good day for the seeds with Fabio Fognini, Tommy Robredo, Juan Monaco and Pablo Andujar all advancing.
Fognini, the No 3 seed, recovered from a second-set wobble to beat Aljaz Bedene 7-6 (7-5) 0-6 6-1, while fourth-ranked Robredo saw off fellow Spaniard Pablo Carreno 7-6 (7-5) 6-3.
Seventh seed Monaco was too strong for Horacio Zeballos as he raced to a 6-3 6-1 win, while Andujar was a 6-4 6-3 victor over Julian Reister.
Marcel Granollers and Nicolas Almagro both suffered three-set defeats, though.
Almagro, the fifth seed, failed to build on a good start as he lost 2-6 6-3 6-0 to Alexandr Dolgopolov, while No 6 seed Granollers crashed out to Joao Sousa 2-6 6-3 7-5.
Pablo Cuevas advanced with a 6-7 (7-0) 6-1 6-3 win over Alejandro Gonzalez, while Albert Ramos brushed aside Leonardo Mayer 6-2 6-0.