The last American has been knocked out of the Wimbledon Tennis Championships in London, with Shenay Perry losing to seventh-seeded Elena Dementieva of Russia.

Dementieva needed just 54 minutes to defeat Perry, 6-2, 6-0 on Monday. It's the first time since 1911 that no Americans made it to the Wimbledon quarterfinals. Only three American men and no women entered in the tournament in 1911, while 14 women and nine men from the U.S. were competing this year.

The top four women's seeds also advanced, with number-one Amelie Mauresmo beating 19th-seeded Serbia's Ana Ivanovic (6-3, 6-4). Second-seeded Belgian Kim Clijsters beat Poland's Agnieszka Radwanska (6-2, 6-2), her third-seeded countrywoman Justine Henin-Hardenne overpowered number 15 Daniela Hantuchova of Slovakia (6-3, 6-1) and fourth-seeded Russian Maria Sharapova topped number 16 Flavia Pennetta of Italy (7-6, 3-6, 6-3).

Number nine Russian Anastasia Myskina also advanced with a (6-4, 7-6) win over Jelena Jankovic of Serbia. But French qualifier Severine Bremond upset 18th-seeded Ai Sugiyama of Japan (7-6, 6-3), while number 27 Li Na became the first Chinese player to reach the quarter-finals of a Grand Slam event by shocking 10th-seeded Russian Nicole Vaidisova in three sets (4-6, 6-1, 6-3).

In men's results, top-seeded Roger Federer of Switzerland beat the Czech Republic's number 13 Tomas Berdych (6-3, 6-3, 6-4). Number two Rafael Nadal of Spain defeated Georgia's Irakli Labadze (6-3, 7-6, 6-3) and sixth-seeded Australian Lleyton Hewitt got by number 23 David Ferrer of Spain in four sets (6-4, 6-4, 4-6, 7-5).

Seventh-seeded Mario Ancic of Croatia needed five sets to eliminate Serbia's Novak Djokovic (6-4, 4-6, 4-6, 7-5, 6-3) while number-14 Czech Radek Stepanek ended the hopes of Spain's Fernando Verdasco with a five-set win (6-7, 6-3, 6-4, 4-6, 6-2).

Marcos Baghdatis of Cyprus, Jonas Bjorkman of Sweden, and Jarkko Niemenen of Finland also made it to the round-of-eight.

Some information for this report was provided by AFP and AP..