World number one Andy Murray has confirmed his withdrawal from next week's Cincinnati Masters due to injury.
Last week the 30-year-old was forced to pull out of the Rogers Cup due to the ongoing hip problem, which also affected his run to the quarter-finals at Wimbledon.
In a statement, Murray said that he is now 'working hard' to recover in time to feature at the US Open in late August.
"Unfortunately I won't be playing in Cincinnati as I continue my recovery - I always enjoy playing there and I look forward to returning next year," he said.
"I'm continuing to work hard on the court with the aim of being in New York."