Seamer Atkinson Compounds England's Fitness Concerns.
'Significant concern' for the English camp as Atkinson leaves the field due to a hamstring issue.
The English seamer further complicated the fitness woes of the England squad after leaving the field early on day two of the Boxing Day Test versus the Australians.
Atkinson felt a problem in his left leg immediately following a delivery that he bowled at the MCG.
The England team indicated the 27-year-old had experienced "tightness" and required time on the sidelines to undergo evaluation "over the next few hours".
The concluding match of the series in Sydney starts at the end of the week.
The English side has previously lost strike bowlers Mark Wood to a knee injury and Jofra Archer to a side strain on this Ashes tour.
Matthew Fisher was brought into the squad as cover for Wood.
Atkinson struggled in the opening two Tests, claiming a mere three wickets.
He was left out of the third Test, only to be brought back for the Melbourne Test in the playing XI.
The county bowler showed better form in Melbourne, taking two wickets with the ball, then making 28 as a batsman among just a trio of England players to reach double figures.
Post a single over at the end of day one, he resumed the next day and had nightwatchman taken by the wicketkeeper.
However, towards the conclusion of that over, he bowled a change of pace to Travis Head and suddenly grabbed his left hamstring.
Gus Atkinson was recalled for the Melbourne match following his omission the previous Test.
