'Major setback' for England as Atkinson leaves the field due to a hamstring issue.
The pace bowler added to the injury concerns plaguing England upon exiting the field on the second morning of the fourth Ashes Test versus the Australians.
Atkinson experienced discomfort in his hamstring after the final ball of the fourth over at the MCG.
The England team stated the 27-year-old had experienced "tightness" and was to take time off the field in order to be assessed "over the next few hours".
The series decider in this Ashes battle at the SCG gets underway on Sunday, 4 January.
The visitors have been without fast bowlers one seamer due to knee trouble and Jofra Archer with an abdominal strain on the current trip.
Matthew Fisher was added to the party to provide backup.
Atkinson struggled in the opening two Tests, claiming a mere a handful of scalps.
He was omitted of the third Test, then recalled for the fourth Test to fill the void.
Surrey's Atkinson performed better in the fourth Test, bagging two scalps with the ball, and scoring 28 runs with the bat among just a trio of teammates to get into double digits.
Post a single over late on the first day, he returned the next day and had nightwatchman edging to the keeper.
Unfortunately, towards the conclusion of his spell, he delivered a variation to Travis Head and promptly felt his left hamstring.
Gus Atkinson was recalled for the Boxing Day Test after being left out of the third.
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