World Number One still struggling
Murray out of Cincinnati and loses ranking
Andy Murray will lose his world number one ranking this month after pulling out of another tournament.
The Scot has withdrawn from the Cincinnati Masters because of an ongoing hip injury. He is not taking part in the Rogers Cup in Montreal for the same reason.
It also hampered his Wimbledon campaign, causing him to struggle against Sam Querrey in their quarter-final tie.
The 30-year-old is also a doubt for the US Open beginning on 28 August, even though he is still hoping to be in New York.
He is certain to lose the number one ranking which he has held since November. Rafael Nadal will take over at the top on 14 August if he reaches the semi-finals of the Rogers Cup this week.
If Nadal falls short then Roger Federer will replace Murray at the top of the standings after Cincinnati on 21 August.