Novak Djokovic will be fit for US Open:

World number one Novak Djokovic expects to be fit for the US Open despite being forced to retire from Sunday's Cincinnati final against Andy Murray.

The Serbian pulled out with a shoulder injury after going 6-4 3-0 behind.

But Djokovic hopes to have sufficient time to recover before play begins at Flushing Meadows on 29 August.

"The good thing is that there is a week, eight days to the start of the US Open," he said. "So I think that's enough time for me to get ready."

Djokovic went into Sunday's final having lost just one match - the French Open semi-final against Roger Federer - in 2011, but any hopes of a 10th tournament victory of the year were ended by the shoulder problem.

He received treatment at the end of the first set and attempted to carry on but failed to win another game.