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Top-Seeded Federer Upset in Second Round ATHENS, Greece - Top-seeded Roger Federer crashed out in the second round of the Olympic tournament Tuesday night, losing 4-6, 7-5, 7-5 to Tomas Berdych of the Czech Republic. Federer, who won Wimbledon the past two years and replaced Andy Roddick atop the rankings in February, was undone by poor serving and a string of unforced errors... 