New Zealand all-rounder Jacob Oram pulled out of the upcoming two-Test tour of Australia on Tuesday as he continues to be hampered by a nagging back injury. The injury-prone Oram returned home after the first Test of the recent Bangladesh series complaining off stiffness and pain. An MRI scan cleared him of serious injury but he is not expected to be fully fit until next month's West Indies tour of New Zealand, Cricket New Zealand said in a statemen.