Melbourne, Jan 18: Wimbledon runner-up David Nalbandian advanced to the fourth round of the Australian Open when an elbow injury forced Xavier Malisse of Belgium to quit their match today. Tenth seed Nalbandian was leading 4-6 6-2 6-0 3-0 when 20th seed Malisse was no longer able to continue. The argentine next faces Swiss sixth seed Roger Federer. Bureau Report