World number one Roger Federer and number two Rafael Nadal have pulled out of the Hamburg Masters tournament due to fatigue, organisers said yesterday.

Nadal, 19, beat the Swiss in Sunday's Rome Masters final in a match that lasted more than five hours to equal Guillermo Vilas's record of 53 straight wins on clay.

The Spaniard will have to wait until the French Open, which begins at the end of the month, to make the 29-year-old mark his own. Only five of the world's top 10 now remain in the tournament's weakest line-up in years.

Argentina's David Nalbandian, American Andy Roddick and Australia's Lleyton Hewitt had already withdrawn.

Croatia's Ivan Ljubicic is the highest ranked player in the tournament.