Swiss tennis star Roger Federer has had no difficulty booking his place in the quarter-finals of the Olympic men's singles tournament. The Basel teenager thrashed Sweden's Mikael Tillström (6-1, 6-2) to move into the last eight.

Federer, who was playing his first official match against the Swede, will now play Morocco's Karim Alami in the quarter-finals. A win would put Federer within sight of the medals.

In athletics, Switzerland's Daria Nauer finished well down the field in the women's marathon. In the last appearance of her international career, the 34-year-old mother from canton Berne was unable to achieve her target of a top half finish.

Nauer was the 38th runner out of 54 to cross the finish line. Her time of two hours and 43 minutes was also well off her stated aim of matching her best ever time of 2:32'38".

The strength of the Olympic field was illustrated by the finishing times of the top competitors with Japan's Naoko Takahashi taking the gold in an Olympic best time of 2:23'14".

The Olympic dream came to an end much more quickly for Paolo Della Santa and Raphael Monachon. The two Swiss entries in the men's 110-metre hurdles both failed to make it beyond the qualifying heats.

Della Santa missed out on the second round by six hundredths of a second, after finishing his heat in 14"12. Monachon was almost seven tenths of a second behind Della Santa.

In the Olympic sailing events, Swiss windsurfer Anja Käser completed her 11th and final fleet race in style - coming in fourth behind the three top surfers. The fourth place finish was Käser's best performance of the week, and guaranteed the 20-year-old an overall position of 12th.

Staying with water sports, Switzerland's synchronised swimming duo, Madeleine Perk and Belinda Schmid, are through to the final. They came 11th out of 24 teams in the compulsory routine.

In news from the wrestling arena, Switzerland's Beat Motzer scored three victories in the 63 kilogramme preliminary round.

He defeated Japan's Yasutoshi Motoki 8-3, Ukraine's Grygoriy Komyshenko 3-1, and New Zealand's Rasoul Amani 11-0.

Motzer's compatriot, Urs Bürgler, was less fortunate in the preliminary round, suffering one defeat out of three matches in the 97 kilogramme category.

Bürgler was beaten by Greece's Konstantinos Thanos 0-4. But the Swiss athlete was victorious against Australia's Ben Vincent, 11-0, and South Korea's Park Woo 1-0.

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