Roger Federer out of the US Open New York - Agencies Roger Federer was knocked out of the US Open on Wednesday when he lost a quarter-final thriller to Tomas Berdych just hours after his old rival Andy Roddick bid a tearful farewell to his tennis career. Federer was unable to conjure up any of his old magic as Berdych stormed to a surprise victory, 7-6 6-4 3-6 6-3, handing the world number one his earliest exit from Flushing Meadows in nine years. “It couldn’t be better,” Berdych said in a courtside interview. “There is no better feeling. There is no better moment than this one.” Federer could not hide his disappointment after arriving in the Big Apple full of hope following his win at Wimbledon in July. “There were so many moments I thought, man, it’s just not happening for me,” said the five-times US Open champion. “It was just a very disappointing match for me.” Roddick made his final appearance at Arthur Ashe Stadium when he lost to Juan Martin del Potro in the fourth round, while Andy Murray and Maria Sharapova both dug themselves out of trouble to stay alive on a drama-charged day at the last grand slam of the year. Only Serena Williams and Novak Djokovic had an easy time, both romping to comfortable victories to enhance their status as the favourites for the singles titles.