Paceman Gus Atkinson Compounds the English team's Fitness Problems.
'Serious blow' for the touring side after Atkinson is forced off suffering a hamstring problem.
The pace bowler further complicated the injury concerns plaguing England after leaving the field during Saturday's play in the Melbourne Test in the Ashes series.
The right-arm seamer experienced discomfort in his hamstring post-delivery in his spell during the morning session.
Team management reported Atkinson felt some "soreness" and required time on the sidelines in order to be assessed "in the coming hours".
The concluding match in this Ashes battle beginning on 4 January begins at the end of the week.
The visitors have previously lost strike bowlers Mark Wood to a knee injury and Jofra Archer to a side strain on the current trip.
Matthew Fisher was brought into the squad as cover for Wood.
Atkinson struggled early in the series, claiming a mere three wickets.
He was omitted for the Adelaide match, only to be brought back for the Boxing Day match in the playing XI.
The county bowler performed better in the fourth Test, claiming a couple of wickets during the host's first knock, before adding 28 with the bat being one of only three English batsmen to get into double digits.
Post a single over in Australia's second innings, he returned for the second day's play and had nightwatchman edging to the keeper.
Yet, towards the conclusion of that over, he bowled a variation to Travis Head and suddenly grabbed at his leg.
The English bowler returned to the side for the Boxing Day Test having missed the previous Test.
