Men's round-up - day five
Andy Roddick survived a tough test against Croatia's Ivan Ljubicic to book his place in the third round of the US Open.
The American began well, but his opponent refused to be intimidated by the strong home support, and Roddick looked relieved when he finally wrapped up his 6-3 6-7 6-3 7-6 victory.
After the match, an unhappy Ljubicic said he was not happy at the atmosphere in which the match had been played.
"If you played this match anywhere in the world but the United States, I would have won it," he said.
"The umpire's call and his acting on court, he doesn't respect the others."
Roddick did not get involved in the controversy after the match which ended in the early hours of Saturday morning local time, making it the American's 21st birthday.
"I've been 21 for nine minutes now. I think I deserve a beer!" said Roddick, who will play Flavio Saretta of Brazil in the third round.
There were no worries for Wimbledon champion Roger Federer who brushed aside Frenchman Jean-Rene Lisnard 6-1 6-2 6-0.
Federer, who struggled in his first round match, was in full control from the start and needed just 78 minutes to dispose of his 94th ranked opponent.
The 22-year-old was in devastating form, hitting 32
winners while Lisnard could find the mark just eight times.
In the third round Federer, the number two seed will take on 23-year-old American James Blake.
Blake made hard work of Armenian Sargis Sargsian in a thrilling second round contest at the US Open.
Blake, whose streetwise style has made him a huge hit with the American public, played some extravagant tennis as he raced into a two-set lead.
Sargsian fought his way back into contention, deservedly taking the third set.
The Armenian looked likely to take the match into a fifth after breaking Blake at 4-4, giving him the chance to serve for the set.
Blake, however, responded by breaking back immediately and went on to win the resulting tie-break to take the match 6-3 6-4 4-6 7-6 (8/6).
Wimbledon finalist Mark Philippoussis swept past Anthony Dupuis 6-2 6-3 6-4.
The Australian, who is yet to drop a set at Flushing Meadows, was in imperious mood, hitting 45 winners in his straight sets win.
The number 20 seed, who sent 21 aces past the 64th-ranked Frenchman, now faces Argentine David Nalbandian in the third round.
Nalbandian struggled past Finnish outsider Jarkko Nieminen in a tight contest, eventually winning 5-7 6-3 6-1 4-6 7-6 (7/3).
"I pretty much know what I have to do," said Philippoussis about his third round clash.
"I'll just run all day. I'll go to the net, be aggressive and play my game. I'm not going to sit back and play his game," he added.
Younes El Aynaoui, the 22nd seed, used all his experience to overcome young Spaniard Rafael Nadal.
The Moroccan, who reached the quarter-finals last year, won in straight sets 7-6 6-3 7-6.
Sjeng Schalken, who reached the last four last year, came from two sets down to defeat German Lars Burgsmuller 4-6 2-6 6-2 6-2 6-0.
Belgium's Xavier Malisse joined Schalken in the third round, overcoming Argentine Agustin Calleri 6-2 6-7 6-3 3-6 6-3.