Fast bowler Gus Atkinson Adds to the English team's Fitness Concerns.
'Serious blow' for the touring side as Atkinson goes off suffering a hamstring problem.
The pace bowler increased the fitness woes of the England squad after leaving the field during Saturday's play of the fourth Ashes Test against Australia.
The pace bowler experienced discomfort in his left leg after the final ball that he bowled on Saturday.
The touring camp stated Atkinson felt some "soreness" and would spend time off the field to undergo evaluation "over the next few hours".
The series decider in this Ashes battle at the SCG begins at the end of the week.
England have previously lost strike bowlers Mark Wood with a knee problem and another paceman to a side strain during this series.
A replacement bowler was brought into the squad as injury reinforcement.
Atkinson struggled in the opening two Tests, claiming a mere three wickets.
He was left out for the Adelaide match, then recalled for the Boxing Day match as Archer's replacement.
Atkinson performed better in the fourth Test, bagging two scalps during the host's first knock, and scoring 28 runs while batting among just a trio of English batsmen to reach double figures.
After bowling one over late on the first day, he returned the next day and dismissed the nightwatchman Scott Boland caught behind.
Yet, towards the conclusion of the fifth over, he bowled a variation to the batsman and suddenly grabbed for his hamstring.
The English bowler returned to the side for the fourth Ashes Test after being left out the previous Test.
