The U.S. doubles team of Mardy Fish and Mike Bryan scored a dramatic win over the Swiss team led by Roger Federer in Saturday\'s Davis Cup play in Switzerland. Fish and Bryan battled back to defeat Federer and Stanislaus Warinka 4-6, 6-3, 6-3, 6-3, to give the Americans a 3-0 sweep in the best-of-five first-round series. The Americans converted 57 percent of their break points to Switzerlands\' 37 percent and won 21 second-serve points to 15 for their opponents. The U.S. team will face either Canada or France in the second round in April.