Federer showed no signs of fatigue despite playing just two days after retaining his Wimbledon crown with victory over American Andy Roddick [ Images ].

After arriving in the Alpine resort late on Monday, the Swiss world number one comfortably moved into the second round of the tournament, where he finished runner-up last year.

Federer, who has won six titles this season, outclassed the Brazilian-born German Behrend, who won just two games and was broken four times against the tournament's top seed.

Federer had earlier received a standing ovation and was presented with a traditional, three-metre-long, Swiss alphorn as reward for his Wimbledon victory.

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Last year he had been given a cow, which he later named Juliette, to honour his first Grand Slam success at Wimbledon.

In the Roy Emerson Arena, Federer was prompted to play the trumpet-like instrument traditionally used to herd livestock.

"Somehow I did the right thing at the right moment," Federer said of his immediate mastery of the technique. "But then I had to pose again for photos and I tried to do it again and then it didn't work.

"I knew before that I wouldn't be getting a cow. I've got two already, I don't need a third. They knew that and I was relieved."

FERRERO STRUGGLING

In other matches on Tuesday, second seed Juan Carlos Ferrero [ Images ] was upset by Austria's Stefan Koubek 7-6, 6-4, while fifth seed Andrei Pavel of Romania was beaten by Switzerland's [ Images ] Davis Cup captain Marc Rosset 7-6, 6-4.

Ferrero, the 2003 French Open [ Images ] champion and a claycourt specialist, struggled on the clay at Gstaad and lost the first set tiebreak 7-4 before he was broken in the second set.

"I'm not playing my best tennis," said Ferrero, who holds a 4-3 record on his favourite surface this year. "I cannot find my game, I'm sadly lacking confidence."

Rosset, the 1992 Olympic [ Images ] champion who is contemplating retirement, said the match had taken a toll on his 33-year-old body.

"I played a two-set match like it was a 400-metre race. I can't keep going like this," he said.

Ferrero's compatriot David Ferrer progressed into the second round with a 2-6, 6-3, 6-4 victory over Tomas Berdych.

Third-seed Rainer Schuettler [ Images ] also progressed with a 6-4, 1-6, 6-3 victory over Michel Kratochvil, fellow German Florian Mayer was a 7-5, 6-3 winner over Spaniard Albert Portas, while Spain's Felix Mantilla beat Belgium's Christophe Rochus 3-6, 6-2, 6-4.