Seeded duo through in Estoril
Spain's Albert Montanes and Flavio Cipolla of Italy reached the second round of the Estoril Open.
Montanes and Cipolla each justified their seedings by progressing in Portugal with straight sets wins on Tuesday.
Seventh seed Montanes was a 6-2 6-3 winner over Australia's Matthew Ebden while Cipolla, seeded eight, eased past Argentina's Diego Junqueira 6-1 6-4 in exactly 80 minutes.
Rui Machado and Joao Sousa won all-Portuguese match-ups against Pedro Sousa and Gastao Elias respectively, but Frederico Gil failed to join them as he fell 6-4 6-2 to Germany's Bjorn Phau.
Three Spanish qualifiers also progressed, with Ivan Navarro, Inigo Cervantes and Daniel Munoz-De La Nava overcoming Daniel Gimeno-Traver, Igor Andreev and Javier Marti respectively.
There were no seeded casualties in the women's event with second seeded Russian Maria Kirilenko leading the way into round two with a straight-forward 7-6 (8/6) 6-1 win over Briton Elena Baltacha.
Third seed Anabel Medina Garrigues beat German qualifier Kristina Barrois 6-4 6-1, fourth seed Petra Cetkovska beat Alexandra Panova 6-2 6-1, and fifth seed Jie Zheng was an easy 6-3 6-1 winner over Ekaterina Makarova.
Sixth seed Kaia Kanepi and ninth seed Polona Hercog also advanced, while there were wins for Jarmila Gajdosova, Maria Joao Koehler, Galina Voskoboeva, Karin Knapp and British qualifier Heather Watson, who beat Lucie Hradecka 6-4 6-4.