Seeds Borna Coric and Leonardo Mayer both booked their places in the last 16 of the Millennium Estoril Open with comfortable first-round victories on Monday.
Croatia's Coric, the sixth seed, beat Italian qualifier Andrea Arnaboldi 6-4 6-1, while there was a 6-1 6-4 win for seventh-seeded Argentinian Mayer over Portuguese wild card Pedro Sousa.
Another home favourite and wild card, Frederico Ferreira Silva, was defeated 6-3 6-2 by Nicolas Almagro of Spain.
Monday's other round-one contest saw French qualifier Stephane Robert overcome Italy's Thomas Fabbiano 6-2 6-2.
Source: PA