Roger is beaten in Davis Cup tie in Switzerland . John Isner wins in straight sets as United States take 2 - 0 lead . Roger Federer suffered a stunning upset defeat to John Isner as the United States took a 2-0 lead Friday in their Davis Cup World Group first round match in Switzerland . Mardy Fish saw off Stanislav ##ski in earlier match . Holders Spain leading Kazakhstan 2 - 0 in Oviedo .
Roger is beaten in Davis Cup tie in Switzerland . John Isner wins in straight sets as United States take 2 - 0 lead . Mardy Fish saw off Stanislav ##ski in earlier match . Holders Spain leading Kazakhstan 2 - 0 in Oviedo .