Hamburg:Roger Federer beat Rafael Nadal 2-6, 6-2, 6-0 on Sunday to win his fourth Hamburg Masters title and end Nadal's record winning streak on clay at 81 matches.
Nadal, ranked No 2 in the world behind Federer, had been unbeaten on the surface since April 2005, a run that included 13 titles.
Federer's come-from-behind win was his first over Nadal on clay in six matches.
The win ended Federer's title drought after he failed to win a title in his last four events, his worst run since he became No 1 in the world in February 2004.
The Swiss won the Australian Open and in Dubai early in the year and has now clinched his third title of 2007.