The former No. 1-ranked Murray had been scheduled to play his first match on Thursday, but notified organizers he was pulling out after failing to practice on Tuesday.
Murray was seeded No. 2 in Brisbane, where he’d been expecting to play his first competitive match since July. He joined top-ranked Rafael Nadal, who pulled out last week in a bid to continue his recovery from injury, as notable withdrawals from the season-opening event in Brisbane.
Murray had planned to use the Brisbane event as his main warmup for the Australian Open starting Jan. 15 in Melbourne. Murray has been a five-time finalist at the Australian Open.