Veteran Australian opener Chris Rogers has been ruled out of the second Test against the West Indies, still feeling the effects of concussion.
Rogers, who missed the first Test after being hit on the helmet during a net session, will once again be replaced by Shaun Marsh at the top of the order.
At the time of the incident, team doctor Peter Brukner said that the symptoms, which included dizzy spells and headaches were likely to subside within a few days in time for the second Test, however that has not been the case.
"Chris has improved but he is still not 100 per cent so we are restricting his training (and) therefore he is unavailable for selection for the second Test," Brukner said.
"While most concussions resolve within a week there is a significant number who remain symptomatic and require a longer period of recovery. Unfortunately Chris is in this category.
"We will continue to monitor his progress and hopefully it will not be too long before he is back to full training."
The Second Test starts on Friday at 1am, Australian East Standard Time.