Fast bowler Gus Atkinson Adds to the English team's Fitness Concerns.
'Major setback' for the touring side as Atkinson is forced off due to a hamstring issue.
The pace bowler further complicated England's injury problems when he left the playing area on the second morning of the fourth Ashes Test against Australia.
The pace bowler pulled up with his left leg post-delivery that he bowled on Saturday.
The touring camp indicated Atkinson felt some "soreness" and would spend time on the sidelines for further assessment "during the day".
The series decider in this Ashes battle in Sydney begins at the end of the week.
The English side has previously lost strike bowlers Mark Wood to a knee injury and another paceman because of a side injury during this series.
A replacement bowler was called up as injury reinforcement.
Atkinson struggled in the opening two Tests, managing only a handful of scalps.
He was dropped of the third Test, before being recalled for the fourth Test as Archer's replacement.
The county bowler performed better in the fourth Test, taking two wickets in Australia's first innings, before adding 28 with the bat being one of only three English batsmen who passed ten runs.
After bowling one over late on the first day, he came back for the second day's play and had nightwatchman taken by the wicketkeeper.
However, at the end of his spell, he sent down a variation to the batsman and suddenly grabbed his left hamstring.
Atkinson returned to the side for the Melbourne match after being left out the previous Test.
