( CNN ) -- World No . 3 Roger Federer ended a seven-year wait for a second World Tennis Tournament title after beating Juan Martin del Potro in the Dutch city of Rotterdam . The 16-time grand slam winner made light work of his clash against the Argentinian third seed , winning 6-1 6-4 in just one hour and 26 minutes . Federer 's triumph was his 71st career title and means 2012 becomes the 12th straight year in which he has captured an ATP tour crown . The Swiss , who also won here in 2005 , said in a courtside interview : `` It 's incredible that it took me seven years to come back and defend my title , I hope the next time is not so long . But if it is , then it means I 'll be playing for another seven years . '' `` This title marks a great start to the season . My team made a lot of sacrifices . It 's been an amazing week for us . '' Of his opponent , who beat him in the 2009 U.S. Open final , Federer said : `` Juan Martin had a great week . He 's playing great tennis . I hope to see you at the ( November ) World Tour Finals . '' Federer , who took his record to 9-2 over Del Potro , blew his opponent away in the opening set , racing into a 5-0 lead after only 28 minutes and securing the opener 6-1 shortly after . Del Potro rallied in the second set , and forced Federer to save a clutch of break points , but the 30-year-old secured the decisive break in the fifth game to seal the match . It marks a return to form for Federer who came into the tournament on the back of two defeats -- to Rafael Nadal in the semifinals of the Australian Open and American John Isner in the Davis Cup . In South America , Spain 's Nicolas Almagro retained his Brazil Open crown with a 6-3 4-6 6-4 victory over Italy 's Filippo Volandri . The top seed and world no . 11 hit 18 aces as he made it 11 career titles , all of which have come on clay .
Roger Federer defeats Juan Martín del Potro to win World Tennis Tournament in Miami . World No . 3 beats Argentinian 6 - 1 6 - 4 in one hour and 26 minutes to seal victory . It is Federer 's second Rotterdam title , seven years after first winning . Spain 's Nicolas Almagro wins Brazil Open by beating Italy 's Filippo Volandri .