Fast bowler Atkinson Compounds England's Injury Worries.
'Significant concern' for the touring side after Atkinson is forced off with a hamstring injury.
Gus Atkinson increased the fitness woes of the England squad upon exiting the playing area during Saturday's play of the Boxing Day Test versus the Australians.
Atkinson experienced discomfort in his left leg immediately following a delivery of the fourth over on Saturday.
The touring camp reported the 27-year-old had experienced "tightness" and was to take time off the field to undergo evaluation "during the day".
The concluding match of the series at the SCG starts this coming Sunday.
England have previously lost fast bowlers Mark Wood to a knee injury and another paceman with an abdominal strain during this series.
Matthew Fisher was called up to provide backup.
Atkinson struggled early in the series, claiming a mere three wickets.
He was left out for the Adelaide match, then recalled for the Melbourne Test as Archer's replacement.
The county bowler improved at the MCG, bagging two scalps with the ball, then making 28 as a batsman among just a trio of England players who passed ten runs.
Post a single over in Australia's second innings, he resumed on Saturday morning and removed Scott Boland Scott Boland caught behind.
Yet, towards the conclusion of that over, he delivered a change of pace to Travis Head and immediately felt at his leg.
The English bowler returned to the side for the fourth Ashes Test after being left out of the third.