Jason Day has been forced to withdraw from the World Cup of Golf and Australian Open next month due to a lingering back injury, the world number one has said. Day had been scheduled to play the Australian Open at the Royal Sydney Golf Club from Nov. 17-20, then partner world number six Adam Scott in the World Cup tournament at Melbourne's Kingston Heath from Nov. 23-27. Day and Scott won the last World Cup event in 2013, which was also held in Melbourne, with Day clinching the individual title, but the 28-year-old was told to rest completely until next season after tearing a ligament in his back.
