Fast bowler Atkinson Adds to the English team's Fitness Worries.
'Significant concern' for the touring side after Atkinson leaves the field suffering a hamstring problem.
The English seamer added to the injury concerns plaguing England upon exiting the field early on day two of the Boxing Day Test against Australia.
The right-arm seamer pulled up with his hamstring post-delivery that he bowled at the MCG.
Team management stated Atkinson had experienced "tightness" and would spend time away from the action to undergo evaluation "during the day".
The series decider of the series beginning on 4 January begins this coming Sunday.
The visitors have been without fast bowlers one seamer to a knee injury and another paceman to a side strain on this Ashes tour.
A replacement bowler was called up as injury reinforcement.
His form was underwhelming during the first two matches, claiming a mere three wickets.
He was left out from the previous Test, only to be brought back for the fourth Test in the playing XI.
The county bowler performed better in the fourth Test, claiming a couple of wickets with the ball, before adding 28 while batting as one of just three England players to get into double digits.
After bowling one over at the end of day one, he resumed on Saturday morning and removed Scott Boland taken by the wicketkeeper.
However, on the final ball of the fifth over, he bowled a slower ball to Travis Head and promptly felt for his hamstring.
The English bowler was brought back for the Melbourne match after being left out the Adelaide game.