Defending champion Roger Federer barely broke a sweat, while former world No. 1 Juan Carlos Ferrero upended Australian Open titlist Marat Safin in Wednesday's second-round action at the Hamburg Masters. The top-seeded Federer blew away Tomas Berdych 6-2, 6-1 in 53 minutes to avenge his shocking loss against the young Czech at last year's Athens Games. Federer, the reigning U.S. Open, Masters Cup and two-time Wimbledon champ, beat Argentine Guillermo Coria in last year's Hamburg finale and also titled here in 2002. The 23-year-old Federer is a brilliant 37-2 this year, including five titles. His third-round opponent on Thursday will be dangerous Spaniard Tommy Robredo. The unseeded Ferrero used all three sets to erase the third-seeded Safin 4-6, 6-4, 6-2 on Day 3 at Rothenbaum. Safin piled up 40 unforced errors, compared to only 15 for Ferrero. Ferrero improved to 5-4 lifetime against Safin, including 2-0 this season. The "Mosquito" topped Safin at the Monte-Carlo Masters just last month. Ferrero was the Hamburg runner-up in 2001, while Safin reached finals here in 2000 and 2002. Fourth-seeded French Open champion Gaston Gaudio continued his winning ways on clay by dispatching 2002 French Open titlist Albert Costa of Spain 7-5, 6-0. Costa titled in Hamburg back in 1998. Gaudio already owns three clay-court crowns this year, including one in Estoril two weeks ago. In other play involving top-10 seeds, No. 5 Tim Henman handled fellow Brit Greg Rusedski 7-6 (7-3), 6-4 amid wet and windy conditions and a No. 10 Coria crushed Russian Mikhail Youzhny 6-2, 6-3. The 2004 French Open runner-up Coria lost to high-flying Spaniard Rafael Nadal in last week's Italian Masters final, as Nadal prevailed in five sets after more than five hours of dramatic tennis at Rome's Foro Italico. Other upsets occurred when Italian Andreas Seppi toppled 12th-seeded Argentine Guillermo Canas 7-6 (11-9), 6-2; Belgian Christophe Rochus routed 13th-seeded Croat Ivan Ljubicic 6-4, 6-2; and Slovakian Dominik Hrbaty humbled 16th-seeded Czech Radek Stepanek 7-5, 7-6 (7-2). A 14th-seeded Robredo blitzed three-time French Open champ and former world No. 1 Gustavo Kuerten 6-3, 6-0 in 62 minutes and 15th-seeded Russian Nikolay Davydenko dropped Argentine Mariano Puerta 7-5, 6-3. Kuerten was the 2000 Hamburg Masters titlist. In other second-round action, Frenchman Sebastien Grosjean overcame German Nicolas Kiefer 2-6, 6-3, 6-4; Croat Mario Ancic stopped Chilean Fernando Gonzalez 6-3, 7-6 (7-1); Italian Filippo Volandri outlasted Spaniard Feliciano Lopez 6-4, 2-6, 6-2; Argentine Juan Ignacio Chela charged past Swede Robin Soderling 6-1, 6-4; Czech Jiri Novak held off Argentine Juan Monaco 6-3, 4-6, 7-6 (8-6); and promising Frenchman Richard Gasquet came back to beat dual- Olympic gold medalist Nicolas Massu 2-6, 6-2, 6-2. The 18-year-old Gasquet shocked the mighty Federer in Monte-Carlo last month. The winner of this $2.67 million clay-court French Open tuneup will claim $436,000.