Australia’s Lleyton Hewitt advanced to the second round of the US Open with a 6-1 7-5 6-4 victory over veteran Wayne Ferreira of South Africa.
The fourth-seeded Hewitt won his 11th straight match dating to his opening victory in Washington over two weeks ago.
The 2001 US Open champion has claimed consecutive hardcourt titles.
Earlier, Russia’s Nikolay Davydenko advanced to the second round when former US Open runner-up Mark Philippoussis, of Australia, retired 4-1 down in the fifth set.
Also, 12th seed Sebastien Grosjean won a battle of Frenchmen, 7-5 6-7 (6-8) 6-2 6-1 over Olivier Patience and number 23 Vincent Spadea of the United States moved on with a 6-7 (3-7) 6-2 6-4 6-4 triumph over Luis Horna of Peru.
In the women’s event Serena Williams, wearing the same controversial outfit she had in her previous match, beat fellow American Lindsay Lee-Waters 6-4 6-3 to move into the third round.
The 22-year-old, who hinted that she might don a see-through black dress, is aiming for her seventh Grand Slam title but the first since Wimbledon last season.
Seventeenth seed Alicia Molik was eliminated in the second round of the US Open at the hands of Slovakia’s Daniela Hantuchova.
Hantuchova prevailed 6-4 6-3 to end the hopes of the Australian on the third day of the final Grand Slam of the year.
Molik won the bronze medal at the Athens Olympics but was unable to maintain her good recent form at Flushing.
Two more seeds fared better with Switzerland’s 15th-ranked Patty Schnyder eclipsing Iveta Benesova of the Czech Republic 6-4 6-1.
Japan’s Ai Sugiyama, seeded 12th, was also convincing as she dispatched Gisela Dulko of Argentina 6-2 6-4.
The unseeded Jelena Kostanic of Croatia progressed at the expense of Russia’s Eugenia Linetskaya 6-4 6-3.