World number one Caroline Wozniacki [ Images ] suffered a humiliating loss in the French Open [ Images ] third round and Samantha Stosur [ Images ] joined her at the exit door on a gloomy Friday.

Roger Federer [ Images ] and David Ferrer remained on course for a quarter-final clash in the men's singles but women's top seed Wozniacki was thrashed 6-1, 6-3 by Slovakian 28th seed Daniela Hantuchova [ Images ] and is still seeking her maiden Grand Slam title.

Wozniacki followed world number two Kim Clijsters [ Images ] out of claycourt Grand Slam as the top two seeds failed to advance past the third round at Roland Garros [ Images ] for the first time since 1971.

The Dane looked completely out of sorts under threatening skies on Court Suzanne Lenglen [ Images ], falling 6-1, 4-0 behind in less than an hour.

Heading for an embarrassingly one-sided loss, Wozniacki broke back but Hantuchova ended her opponent's ordeal after 73 minutes.

Wozniacki, whose best Grand Slam performance was reaching the US Open [ Images ] final in 2009, left the court without looking at the crowd, her eyes staring at the clay.

Australian Stosur, last year's runner-up, could not locate her usual high-kicking serve and punishing forehand as she suffered a 6-4, 1-6, 6-3 defeat by Argentine world number 51 Gisela Dulko [ Images ].

FEELING DIZZY

Defending champion Francesca Schiavone also started slowly but the Italian fifth seed fought back against Chinese Peng Shuai [ Images ] who was forced to quit after feeling dizzy while trailing 6-3, 1-2.

Schiavone will take on former world number one Jelena Jankovic [ Images ] after the Serb ignored Bethanie Mattek-Sands's painted face and thrashed the American 6-2, 6-2.

World number three Federer continued his smooth progress through the tournament in the shadow of Novak Djokovic [ Images ] and Rafa Nadal [ Images ], thrashing Serbian 29th seed Janko Tipsarevic [ Images ] 6-1, 6-4, 6-3 in just 90 minutes.

Ferrer demolished Ukraine's Sergiy Stakhovsky 6-1, 6-1, 6-3 and the Spanish seventh seed, who has not dropped a set in three matches, will next faces France's [ Images ] Gael Monfils after the ninth seed eased past Belgian Steve Darcis 6-3, 6-4, 7-5.

Local favourite Marion Bartoli [ Images ] beat German prospect Julia Goerges after dropping the first set for the third time in a row and 2009 champion Svetlana Kuztnetsova continued her fine run with a 6-0, 6-4 thrashing of Canada's [ Images ] Rebecca Marino.

Djokovic will take on Juan Martin del Potro [ Images ] later on Friday when the sledgehammer groundstrokes of the Argentine will test the world number two's armour-plated confidence in the most eagerly anticipated match of the tournament so far.