World number five Roger Federer beat Nicolas Kiefer 6-1 6-3 in the Halle Open final to win his first ATP grass-court title.
Federer joined an elite club in Halle
The Swiss top seed's fourth title of the year puts him in an elite group of 12 active players to have won on all four surfaces - grass, clay, hard courts and indoors.
And it handed Federer sweet revenge for last year's Halle loss to local favourite Kiefer.
Federer began the match in fine style, racing to a 5-0 lead as his opponent struggled to find any form.
Kiefer, runner-up to Yevgeny Kafelnikov in 2002, stopped the rot by holding serve in the sixth game.
But his was only a temporary reprieve as the Swiss served out for the set.
A cruel net cord gave Federer a break in the third game of the second set, after which he romped away with the match.