LISBON, May 2: France's Paul-Henri Mathieu upset Chile's world No 6 Fernando Gonzalez 6-2, 6-4 to reach the second round of the Estoril Open on Tuesday.

Mathieu, who won his third ATP career title last weekend in Casablanca, broke fourth seeded-Gonzalez's serve five times to wrap up his victory in just over 80 minutes in a rain-interrupted clay court match.

The Frenchman plays Russian Igor Kunitsyn in the second round while compatriot Richard Gasquet will face Portugal's Frederico Gil after beating Max Mirnyi of Belarus 6-3, 6-3.

Sixth-seeded Dmitry Tursunov of Russia beat Florent Serra of France 4-6, 6-3, 6-1 and Agustin Calleri of Argentina overcame Danai Udomchoke of Thailand 6-4, 4-6, 6-1.

Spain's Guillermo Garcia-Lopez dulled the 29th birthday celebrations for American Michael Russell with a comprehensive 6-1, 6-2 defeat. Second seed Tommy Robredo also turned 26 on the day.

American veteran Vince Spadea scratched out a win in two hours over Russian Teimuraz Gabashvili 6-1, 5-7, 6-4 to move into a second-round challenge against either top seed Nikolay Davydenko or French qualifier Olivier Patience.

In women's play, it was smooth sailing at the cloudy costal city for leading seeds.

France's number one Marion Bartoli overwhelmed number 330 Neuza Silva 6-2, 6-1 while second seed Francesca Schiavone of Italy was equally untroubled by Croatian Ivana Lisjak 6-1, 7-5.

Caroline Wozniacki, last summer's Wimbledon junior champion, upset German fourth seed Martina Muller 6-4, 6-0. Italian eighth seed Flavia Pennetta, a 2006 semi-finalist, beat Spain's Arantxa Parra Santonja 6-3, 6-1.

Tuesday’s results (prefix number denotes seeding):

Men’s singles:

First round: Paul-Henri Mathieu (France) beat 4-Fernando Gonzalez (Chile) 6-2, 6-4; 6-Dmitry Tursunov (Russia) beat Florent Serra (France) 4-6, 6-3, 6-1; 7-Agustin Calleri (Argentina) beat Danai Udomchoke (Thailand) 6-4, 4-6, 6-1; Vince Spadea (US) beat Teimuraz Gabashvili (Russia) 6-1, 5-7, 6-4; 5-Richard Gasquet (France) beat Max Mirnyi (Belarus) 6-3, 6-3; Guillermo Garcia-Lopez (Spain) beat Michael Russell (US) 6-1, 6-2.

Women’s singles:

First round: Greta Arn (Germany) beat Laura Pous (Spain) 6-2, 6-2; Sofia Arvidsson (Sweden) beat Frederica Piedade (Portugal) 6-0, 6-0; Virginia Ruano (Spain) beat Camille Pin (France) 6-4, 7-6 (7-4); 2-Francesca Schiavone (Italy) beat Ivana Lisjak (Croatia) 6-1, 7-5; Gisela Dulko (Argentina) beat Julia Schruff (Germany) 6-1, 1-6, 6-1; Lourdes Dominguez (Spain) beat Martina Sucha (Slovakia) 7-5, 6-1; Caroline Wozniacki (Denmark) beat 4-Martina Mueller (Germany) 6-4, 6-0; 1-Marion Bartoli (France) beat Neuza Silva (Portugal) 6-2, 6-1.—Agencies