Oeiras, Portugal:Paul-Henri Mathieu beat fourth-seeded Fernando Gonzalez of Chile 6-2, 6-4 on Tuesday in the first round of the Estoril Open.
The Frenchman wrapped up victory over the Australian Open finalist in just over 80 minutes, confirming the clay-court form that earned his third career title last week at the Grand Prix Hassan II in Casablanca, Morocco.
Fifth-seeded Richard Gasquet of France made it into the second round with a 6-3, 6-3 victory over Max Mirnyi of Belarus.
Sixth-seeded Dmitry Tursunov of Russia and seventh-seeded Agustin Calleri of Argentina needed three sets to advance. Tursunov beat Florent Serra of France 4-6, 6-3, 6-1, while Calleri ousted Thailand's Danai Udomchoke 6-4, 4-6, 6-1.
Vincent Spadea of the United States dropped a set in overcoming Teimuraz Gabashvili 6-1, 5-7, 6-4, but American Michael Russell lost to Spain's Guillermo Garcia-Lopez 6-1, 6-2.
In the women's first round, top-seeded Marion Bartoli of France cruised past Portugal's Neuza Silva 6-2, 6-1, and No. 2 seed Francesca Schiavone of Italy also won in straight sets against Croatia's Ivana Lisjak 6-1, 7-5.
Fourth-seeded Martina Muller lost 6-4, 6-0 against Denmark's Caroline Wozniacki, while ninth-seeded Flavia Pennetta beat Spanish qualifier Arantxa Parra Santonja 6-3, 6-1.
Eighth-seeded Eleni Daniilidou of Greece retired with a calf injury when she was 6-4, 3-1 down against Alberta Brianti of Italy.
Gisela Dulko of Argentina stumbled in the second set but rallied to knock out Germany's Julia Schruff 6-1, 1-6, 6-1.
Sofia Arvidsson of Sweden crushed local player Frederica Piedade 6-0, 6-0, and Lourdes Dominguez Lino of Spain defeated Martina Sucha of Slovakia 7-5, 6-1.
Germany's Greta Arn beat Spaniard Laura Pous Tio 6-2, 6-2, while Spain's Virginia Ruano Pascual defeated Camille Pin of France 6-4, 7-6 (4).
Anastasiya Yakimova of Belarus came back after losing the first set to beat Barbora Zahlavova Strycova of the Czech Republic 2-6, 6-4, 6-3.
The last 11 matches of the day, including top-seeded Nikolay Davydenko's game against Olivier Patience, were postponed due to rain.