Swiss Federer will be bidding for his fourth consecutive title at Flushing Meadows, while Belgian Henin is hoping to repeat her 2003 triumph.

Organisers kept in line with the world rankings, with Spain's Rafael Nadal [ Images ] seeded two, Novak Djokovic [ Images ] of Serbia at three and Russian Nikolay Davydenko [ Images ] fourth.

Three other former champions are seeded in the men's event with American Andy Roddick [ Images ] fifth, 2001 winner Lleyton Hewitt [ Images ] of Australia [ Images ] 16th and 2000 champion Marat Safin [ Images ] of Russia [ Images ] at 25.

Defending women's champion Maria Sharapova [ Images ] of Russia is seeded second behind Henin, with Serb Jelena Jankovic [ Images ] third and Russian Svetlana Kuznetsova [ Images ], the 2004 winner, fourth.

Wimbledon [ Images ] champion Venus Williams [ Images ] is 12th while her sister Serena, who has not played since Wimbledon, is eighth.