LONDON — Britain's Olympic heptathlon champion Jessica Ennis-Hill has ruled herself out of next month's world championships because she has not fully recovered from an Achilles injury. “Up until now we have been focusing on managing the pain so I can train and get myself in shape to go out there to win in Moscow — which has meant not focusing on finding a cure for the injury. The time has now come to stop chasing fitness and look to cure the problem,” she said in a statement Wednesday. The Briton, world champion in 2009 and silver medallist two years ago, has struggled to shake off a persistent left Achilles problem. — Reuters