Paceman Gus Atkinson Compounds England's Fitness Problems.
'Significant concern' for the touring side after Atkinson goes off with a hamstring injury.
The English seamer added to the injury concerns plaguing England upon exiting the playing area on the second morning of the Boxing Day Test versus the Australians.
Atkinson experienced discomfort in his left hamstring post-delivery in his spell at the MCG.
Team management stated Atkinson reported "discomfort" and required time away from the action in order to be assessed "in the coming hours".
The concluding match in this Ashes battle at the SCG begins at the end of the week.
England have already lost fast bowlers Mark Wood due to knee trouble and another paceman with an abdominal strain on this Ashes tour.
Matthew Fisher was added to the party to provide backup.
Atkinson struggled during the first two matches, claiming a mere a handful of scalps.
He was dropped for the Adelaide match, only to be brought back for the Boxing Day match as Archer's replacement.
The county bowler performed better in the fourth Test, taking two wickets in Australia's first innings, then making 28 while batting as one of just three England players to get into double digits.
Post a single over late on the first day, he returned for the second day's play and had nightwatchman taken by the wicketkeeper.
Unfortunately, on the final ball of the fifth over, he bowled a variation to Travis Head and immediately felt his left hamstring.
Gus Atkinson was recalled for the Boxing Day Test following his omission the previous Test.
