Fast bowler Atkinson Adds to England's Fitness Concerns.
'Major setback' for the English camp as Atkinson leaves the field due to a hamstring issue.
The English seamer increased England's injury problems upon exiting the playing area during Saturday's play of the fourth Ashes Test against Australia.
The right-arm seamer experienced discomfort in his left hamstring post-delivery in his spell on Saturday.
The England team stated Atkinson reported "discomfort" and would spend time off the field in order to be assessed "over the next few hours".
The concluding match of the tour beginning on 4 January starts on Sunday, 4 January.
England have previously lost strike bowlers Mark Wood with a knee problem and another paceman because of a side injury on this Ashes tour.
A replacement bowler was brought into the squad to provide backup.
The seamer had a tough time early in the series, managing only three wickets.
He was omitted of the third Test, before being recalled for the fourth Test as Archer's replacement.
Atkinson improved at the MCG, claiming a couple of wickets during the host's first knock, before adding 28 while batting being one of only three teammates to get into double digits.
Post a single over at the end of day one, he came back the next day and removed Scott Boland edging to the keeper.
Yet, towards the conclusion of his spell, he sent down a change of pace to Travis Head and immediately felt for his hamstring.
Gus Atkinson was brought back for the fourth Ashes Test having missed the previous Test.
