His place in the draw is expected to be taken by French lucky loser Florent Serra.
David Nalbandian was ruled out of the US Open after suffering a rib injury, the organisers confirmed.Nalbandian, the former world number three and Wimbledon runner-up in 2002, had been due to face Argentine compatriot, and 2009 champion in New York, Juan Martin del Potro in the first round on Wednesday.I suffered the injury in training. I am sorry that I could not attend the US Open, Nalbandian later tweeted.But I hope to be fit for the Davis Cup semi-final against the Czech Republic in September.