Federer beats Del Potro in Rotterdam final Feb 19 10:54 AM US/Eastern Switzerland's Roger Federer won his second title at the Rotterdam Open seven years after his first as he defeated Argentine Juan Martin del Potro 6-1, 6-4 here on Sunday. Federer now owns 71 career trophies after lifitng his first of this season. He finished 2011 with three straight titles indoors at Basel, Paris Bercy and the London year-end championships. The victory took Federer's record against Del Potro to 9-2, with the Swiss winning three of four in the series after losing the 2009 US Open final to the South American. Federer has now assured himself of a 12th consecutive year in which he has won at last one ATP title.