Gael Monfils (L) of France returns the ball to Stefan Koubek of Austria during their men's singles tennis match on the fourth day of the Australian...

...talks to captain Patrick McEnroe during the Davis Cup World Group single match against Austria's Stefan Koubek, Austria versus United States, in Vienna, Austria, on Sunday, Feb. 10, 2008. (AP Photo/Hans Punz...

James Blake from the U.S. Davis Cup team returns a shot to Austria's Stefan Koubek during the second single of the Davis Cup World Group matches Austria versus United States, on...

Andy Roddick of the United States returns a shot during the second set against Stefan Koubek of Austria in a Davis Cup match Friday in Uncasville, Conn. Roddick defeated Koubek 6-4...

Andy Roddick serves against Stefan Koubek during their Davis Cup match Friday in Uncasville, Conn. Roddick won 6-4, 6-4, 6...

...CORRECTS SCORE TO SAFIN WINNING 3-6, 6-3, 7-5 **Stefan Koubek, of Austria, argues with an umpire after losing a point to seventh-seeded Marat Safin, of...

France's Arnaud Clement dives to make a return against Stefan Koubek during their match at the U.S. Open. Clement won the first-round match 6-3...