Murray had been tipped to win his first Grand slam at the US Open
Britain's Andy Murray has fallen one place in the world rankings to third after being overtaken by Rafael Nadal following the results at the US Open.
Murray was beaten by Marin Cilic in the fourth round at Flushing Meadows, while Nadal reached the semi-finals.
The Spaniard was knocked out by Argentina's Juan Martin del Potro, who went on to win his first Grand Slam.
But Nadal's performance ensured he regained his world number two spot, behind beaten finalist Roger Federer.
Del Potro moved up one place to fifth in the rankings after his victory against Federer.