Roger Federer says that losing a two-set lead to Lleyton Hewitt in the 2003 Davis Cup semifinals in Melbourne was worse than his recent defeat at the U.S. Open, when Novak Djokovic also came back from two sets down to win. "I still believe it was one of my toughest losses I ever had as a player," Federer told reporters. "People might think Djokovic was rough, but for me that was nothing compared to the Lleyton loss back in '03 just because I felt I should have won so bad." Hewitt and Federer will face off in Davis Cup in Sydney on Friday.