Paceman Atkinson Compounds England's Fitness Concerns.
'Significant concern' for the touring side as Atkinson is forced off suffering a hamstring problem.
The English seamer added to the injury concerns plaguing England when he left the ground early on day two of the Boxing Day Test against Australia.
Atkinson experienced discomfort in his left hamstring post-delivery that he bowled during the morning session.
The England team stated the 27-year-old had experienced "tightness" and was to take time away from the action in order to be assessed "during the day".
The series decider of the series at the SCG gets underway on Sunday, 4 January.
England have been without strike bowlers Mark Wood to a knee injury and Jofra Archer with an abdominal strain on this Ashes tour.
A replacement bowler was brought into the squad to provide backup.
Atkinson struggled early in the series, taking just three wickets.
He was left out from the previous Test, then recalled for the fourth Test to fill the void.
Atkinson showed better form in Melbourne, bagging two scalps during the host's first knock, and scoring 28 runs while batting being one of only three English batsmen to get into double digits.
Following a brief spell in Australia's second innings, he resumed on Saturday morning and removed Scott Boland Scott Boland caught behind.
However, at the end of that over, he delivered a variation to Travis Head and immediately felt his left hamstring.
Atkinson returned to the side for the Boxing Day Test having missed the Adelaide game.
