Oeiras, Portugal: Roger Federer captured his first singles win on clay this season, beating Bjorn Phau of Germany 6-3, 6-4 at the Estoril Open on Wednesday.
The world No. 1 conceded just 17 points on his service game as he rebounded from a first-round loss in Rome last week.
"It was a very important match for me today," Federer said.
Federer, who had a bye into the second round at Estoril, will meet Arnaud Clement of France in the quarterfinals. Federer won the Estoril crown in 2008 but skipped last year`s event.
The Rome Masters, where he lost against 40th-ranked Ernests Gulbis, was Federer`s first singles match in nearly a month. He took off several weeks after losing in the fourth round at Key Biscayne at the end of March.
Fourth-seeded Albert Montanes, the defending champion, ousted fellow Spaniard Daniel Gimeno-Traver 6-1, 6-2 and next plays eighth-seeded Pablo Cuevas. The Uruguayan overcame Marcel Granollers of Spain 7-6 (8), 7-6 (2).
Second-seeded Sorana Cirstea of Romania advanced in the women`s event with a 7-5, 7-5 victory over Michelle Larcher de Brito of Portugal.
Fourth-seeded Anabel Medina Garrigues of Spain and seventh-seeded Peng Shuai of China also advanced.