LONDON - Jessica Ennis-Hill's coach expects the Olympic heptathlon champion to be sidelined for up to four months with the Achilles problem that forced her withdrawal from this month's world championships. Ennis-Hill pulled out of the August 10-18 championships in Moscow on Thursday, blaming her absence on the injury she has been struggling with for the past few months. And on Friday the 27-year-old's coach Toni Minichiello told the BBC: "Achilles tendons are awkward and there's a period of rest (involved). "If we're lucky then we're looking at a 12 to 15-week recuperation period." Ennis-Hill was one of the stars of the London Olympics last year and her victory in the seven-event competition made her one of Britain's most recognisable sports stars. –AFP