Seamer Gus Atkinson Adds to the English team's Fitness Problems.
'Major setback' for the touring side after Atkinson leaves the field due to a hamstring issue.
Gus Atkinson further complicated England's injury problems upon exiting the field early on day two of the fourth Ashes Test versus the Australians.
The right-arm seamer pulled up with his left leg after the final ball of the fourth over on Saturday.
Team management indicated the 27-year-old felt some "soreness" and was to take time away from the action for further assessment "during the day".
The concluding match in this Ashes battle at the SCG gets underway this coming Sunday.
The visitors have previously lost key quicks one seamer due to knee trouble and another paceman with an abdominal strain during this series.
Matthew Fisher was brought into the squad 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 as Archer's replacement.
Atkinson showed better form in Melbourne, claiming a couple of wickets during the host's first knock, and scoring 28 runs with the bat as one of just three teammates to get into double digits.
Post a single over late on the first day, he resumed for the second day's play and had nightwatchman Scott Boland caught behind.
However, at the end of his spell, he sent down a change of pace to the batsman and promptly felt at his leg.
The English bowler was recalled for the Melbourne match after being left out the Adelaide game.
