London (AFP) - Pakistan great Waqar Younis questioned whether Sean Abbott would continue in cricket after delivering the ball that led to the death on Thursday of Australian batsman Phillip Hughes. The cricket world was united in grief after it was announced that Hughes, due to celebrate his 26th birthday this weekend, had died having failed to regain consciousness after being hit at the base of the skull trying to hook a bouncer from Abbott while batting for South Australia against New South Wales at the Sydney Cricket Ground on Tuesday.It appeared the ball had hit Hughes on an area of his neck unprotected by his batting helmet."How will he (Abbott) continue?," Waqar, one of the outstanding fast bowlers of his generation and now Pakistan's coach, told AFP. "He needs counselling, which I am sure must have started, and needs to stay calm," he added.But former England fast bowler David Lawrence said he feared Abbott may never player cricket again as a result of the tragedy.Lawrence is well-placed to understand Abbott's situation having, as a 24-year-old Gloucestershire paceman, bowled the ball that hit West Indies' batsman Phil Simmons -- who wasn't wearing a helmet -- flush on the head in a tour match at Bristol, south-west England. Simmons, now the coach of Ireland, went on to make a full recovery but only after his heart stopped and undergoing emergency brain surgery."He collapsed.