World Number One and defending champion Roger Federer of Switzerland and two-time former champion Andre Agassi of the United States face off today in the men's final of the U.S. Open tennis championships in New York.

The top-seeded Federer beat third-seeded former champion Lleyton Hewitt of Australia, 6-3, 7-6, 4-6, 6-3 Saturday to reach the final.

The seventh-seeded Agassi knocked off fellow-American Robby Ginepri in a five-set marathon, 6-4, 5-7, 6-3, 4-6, 6-3, in the other semifinal.

Agassi, 35, is the oldest man in the tournament.  He has 60 career titles, including eight in Grand Slam events, with two of those at the U.S. Open. 

If he wins today, Agassi will be the oldest man to win the event in 35 years, but Federer has beaten Agassi in their last seven meetings.  Agassi says it's going to be a tough match.

"Most people have weaknesses, and most people only have one great shot,? said Agassi.  ?Federer does not have weaknesses, and has a few great shots. So, that equates to a problem.  He has earned that respect.  It means you go out in the match, and you address it with urgency, and you have to play well.  He is certainly the guy that is doing it better than anyone now."

Federer, 24, has 31 career tournament titles, and is going for his sixth Grand Slam championship in six finals appearances.  He says it should be a great final.

"What better final could I wish for?  An American in a U.S. Open final.  So, great, and I am looking forward to it," he said.

Kim Clijsters won the Women's title on Saturday. The Belgian won the first Grand Slam title of her career, trouncing 12th-seeded Mary Pierce of France 6-3, 6-1 in the women's championship match.