New York, Aug 31 (DPA) Roger Federer will take aim at a sixth straight US Open title Monday, playing a memory-making first-round match against an 18-year-old American wildcard with no Grand Slam experience.

The mismatch looks to be all in Federer's favour as he faces nervous teen Devin Britton, ranked outside the top 500 and taking to the court at a major for the first time.

While he expects a victory, the 28-year-old Federer recalled a similar situation in his own tennis life in 1998 against Andre Agassi.

'I went through maybe something a little bit similar when I played Agassi when I was 17 in Basel, in my hometown where I used to be a ballboy,' said the world number one hoping to become the first in modern history to win six straight titles in New York.

'I played Agassi - that was disbelief,' admitted the 15-time Grand Slam singles champion. 'I knew I still had a lot of work to do from the baseline, and I was playing maybe one of the best players of all time in that match.

'I was in shock, but you try to enjoy it and try to put in a good fight,' he said of the 6-3, 6-2 defeat.

Federer will have all the edges in the first-round contest. 'A best-of-five-set match is maybe something Britton has never played before.

'But in tennis you always have a chance. If you think the guy's not to make a game, it's absurd.