The 30-year-old suffered the injury last year and has not played on the ATP tour since losing in the quarter-finals at Wimbledon.’Sadly I won’t be playing in Melbourne this year, as I am not yet ready to compete,’ Murray said in a statement.’I’ll be flying home shortly to assess all the options but I appreciate all the messages of support and I hope to be back playing soon.’Australian Open’s tournament director Craig Tiley said he respected what was a ‘very hard decision for Andy’.