Rory McIlroy's anxious wait over injury

Rory McIlroy was visiting a specialist today to discover the extent of a back problem ahead of a maiden season on the US PGA Tour.

The Northern Ireland golfer has developed the injury after enduring a gruelling practice schedule, which has involved eight-hour sessions.

McIlroy, sixth at yesterday's Dubai Desert Classic, said: "I think it's just a repetitive injury and comes from hitting a lot of balls."