Russian Mikhail Youzhny reached the US Open semi-finals for the second time with a 3-6, 7-6 (9-7), 3-6, 6-3, 6-3 win over Switzerland's Stanislas Wawrinka.

Her US Open tilt may be over, but the new and improved Samantha Stosur believes her best grand slam opportunity may well come in four months at Melbourne Park.

Roger Federer has defied gusting winds to fire 18 aces and advanced to the US Open semi-finals by defeating Swedish fifth seed Robin Soderling 6-4, 6-4, 7-5.

Top seed Caroline Wozniacki reached the US Open semi-finals by defeating Dominika Cibulkova 6-2, 7-5 in a wind-whipped match.

Novak Djokovic reached the US Open semi-finals for a fourth consecutive year with a convincing 7-6 (7-2), 6-1, 6-2 victory over Gael Monfils in another windy match at Flushing Meadows.

Vera Zvonareva of Russia has reached the semi-finals of the US Open with a 6-3, 7-5 win over Kaia Kanepi of Estonia.

Kim Clijsters was relieved to emerge with a victory but concerned she might not be so fortunate in her semi-final showdown against Venus Williams unless she improved her serving.

Samantha Stosur owned up to committing tennis suicide after her US Open campaign ended in a shattering quarter-final loss to defending champion Kim Clijsters.

Rafael Nadal kept his perfect record intact at the US Open Tuesday as he powered past Spanish compatriot Feliciano Lopez into the quarter-finals.

Australia's Samantha Stosur has bowed out of the US Open following a roller-coaster quarter-finals defeat to defending champion Kim Clijsters.

US third seed Venus Williams advanced to the US Open semi-finals this morning after defeating French Open champion Francesca Schiavone 7-6 (7-5), 6-4.

Stanislas Wawrinka of Switzerland reached the quarter-finals of the US Open with with a marathon 7-6 (11-9), 6-7 (5-7), 7-5, 4-6, 6-4 win over Sam Querrey of the United States.

Unbeaten at the US Open in 18 matches since 2003, Kim Clijsters does not fear too much at Flushing Meadows.

Even Roger Federer had to say he was sorry for the way he won the pivotal second-set tie-breaker over pal Jurgen Melzer and advanced to the US Open quarter-finals on Monday.

Tennis legend John McEnroe again will play in the World Tennis Challenge in Adelaide next January.

Caroline Wozniacki has lived up to her top-seed status at the US Open by overpowering former champion Maria Sharapova in a fourth-round blockbuster.

Samantha Stosur has welcomed her promotion to top billing for her marquee US Open quarter-final with defending champion Kim Clijsters.

Dominika Cibulkova of Slovakia has reached the quarter-finals of the US Open with a 7-5, 7-6 (7-4) upset win over former champion Svetlana Kuznetsova of Russia.

Serbian third seed Novak Djokovic has advanced to a US Open quarter-final against revenge-minded Frenchman Gael Monfils by defeating US 19th seed Mardy Fish 6-3, 6-4, 6-1.

Samantha Stosur may not even find time to practise for her US Open quarter-final with titleholder Kim Clijsters after her dramatic triumph over Elena Dementieva.

Australia's Samantha Stosur survives four match points to defeat Russian Elena Dementieva and advance to the US Open quarter-finals.

France's Gilles Simon has been bundled out of the US Open but says he is happy to be leaving Flushing Meadows to see his bundle of joy - newborn son, Timothee. Simon, 25, lost to top-seeded world number one Rafa Nadal 6-4, 6-4, 6-2.

Fourth seed Andy Murray of Britain has crashed out of the US Open, losing 6-7 (3-7), 7-6 (7-4), 6-3, 6-3 to Switzerland's Stanislas Wawrinka.

Doubles specialist Paul Hanley has won the last spot in Australia's Davis Cup team to face Belgium in this month's World Group play-off in Cairns.