Richard Gasquet powered past Paolo Lorenzi of Italy 6-1, 6-1 at the Estoril Open on Wednesday to reach his fifth quarterfinal of the season.
The second-seeded Frenchman broke twice in the opening set and three times in the second to close out a commanding performance on clay in 66 minutes.
Gasquet, who lost to Novak Djokovic in the 2007 Estoril final, hit 24 winners.
Third-seeded Stanislas Wawrinka recovered from a shaky start to beat Spanish qualifier Ivan Navarro 7-6 (5), 6-1.
The big-serving Swiss saved break points in his first two service games before being broken in the sixth game on a double fault. He broke back immediately and had five set points at one stage in the tiebreaker.
Wawrinka overpowered his opponent in the 20-minute second set, serving out the match in damp and windy conditions at the rain-disrupted event.
In the women's event, top-seeded Roberta Vinci of Italy advanced to the quarterfinals with a 6-2, 6-0 victory over Portugal's Maria Joao Koheler.
Fourth-seeded Petra Cetkovcka of the Czech Republic downed Britain's Heather Watson 6-3, 6-1, and sixth-seeded Kaia Kanepi of Estonia ousted Vania King of the United States 6-4, 6-4.
Galina Voskoboeva of Kazakhstan knocked out 2006 champion Zheng Jie of China 6-4, 6-1.