Paceman Gus Atkinson Adds to the English team's Injury Problems.
'Significant concern' for the touring side after Atkinson goes off due to a hamstring issue.
The English seamer further complicated the injury concerns plaguing England when he left the playing area during Saturday's play of the fourth Ashes Test against Australia.
The right-arm seamer pulled up with his left hamstring post-delivery that he bowled during the morning session.
The touring camp reported the 27-year-old reported "discomfort" and required time away from the action for further assessment "during the day".
The concluding match of the series at the SCG starts at the end of the week.
England have already lost fast bowlers Mark Wood to a knee injury and another paceman to a side strain on this Ashes tour.
Matthew Fisher was brought into the squad as injury reinforcement.
The seamer had a tough time early in the series, claiming a mere a handful of scalps.
He was dropped for the Adelaide match, only to be brought back for the Melbourne Test in the playing XI.
Atkinson improved at the MCG, claiming a couple of wickets during the host's first knock, then making 28 as a batsman among just a trio of English batsmen to reach double figures.
After bowling one over late on the first day, he came back for the second day's play and removed Scott Boland taken by the wicketkeeper.
Unfortunately, at the end of that over, he bowled a change of pace to the batsman and promptly felt his left hamstring.
Gus Atkinson was recalled for the Melbourne match after being left out of the third.
