Paceman Gus Atkinson Adds to the English team's Fitness Concerns.
'Major setback' for the touring side as Atkinson is forced off suffering a hamstring problem.
Gus Atkinson increased the injury concerns plaguing England upon exiting the ground during Saturday's play of the fourth Ashes Test against Australia.
The right-arm seamer experienced discomfort in his left hamstring immediately following a delivery in his spell during the morning session.
Team management indicated the 27-year-old had experienced "tightness" and would spend time away from the action for further assessment "over the next few hours".
The concluding match of the series in Sydney gets underway at the end of the week.
The English side has already lost strike bowlers Mark Wood to a knee injury and another paceman with an abdominal strain on the current trip.
A replacement bowler was added to the party as injury reinforcement.
The seamer had a tough time in the opening two Tests, claiming a mere a handful of scalps.
He was omitted from the previous Test, only to be brought back for the Boxing Day match as Archer's replacement.
Surrey's Atkinson improved at the MCG, taking two wickets during the host's first knock, before adding 28 as a batsman as one of just three teammates to reach double figures.
After bowling one over in Australia's second innings, he resumed for the second day's play and had nightwatchman Scott Boland caught behind.
Unfortunately, at the end of his spell, he sent down a slower ball to Travis Head and suddenly grabbed at his leg.
Gus Atkinson was brought back for the fourth Ashes Test after being left out of the third.
