The women's singles final of US Open between Serena Williams and Victoria Azarenka has been postponed until tomorrow because of forecast heavy rains and storms.Briton Olympic champion Andy Murray reaching his fifth Grand Slam final defeat Tomas Berdych of the Czech Republic 5-7, 6-2, 6-1, 7-6 (7) in a rain-delayed and wind-swept semi-final of US open in New York on Saturday.Andy Murray will play against the winner of second semi-final between Novak Djokovic and David Ferrer.Saturday's semi-final between Serbia's Novak Djokovic and Spanish David Ferrer was suspended.Ferrer was leading the second semi 5-2 in the opening set when tournament officials stopped the match because of high winds.