Fast bowler Gus Atkinson Compounds the English team's Fitness Worries.
'Major setback' for the English camp as Atkinson goes off with a hamstring injury.
The pace bowler further complicated the injury concerns plaguing England after leaving the field early on day two in the Melbourne Test against Australia.
The pace bowler pulled up with his hamstring after the final ball that he bowled on Saturday.
The touring camp indicated the 27-year-old reported "discomfort" and would spend time away from the action in order to be assessed "in the coming hours".
The series decider in this Ashes battle beginning on 4 January gets underway on Sunday, 4 January.
The visitors have been without strike bowlers Mark Wood to a knee injury and another paceman with an abdominal strain on the current trip.
A replacement bowler was brought into the squad as cover for Wood.
The seamer had a tough time during the first two matches, claiming a mere three wickets.
He was dropped from the previous Test, only to be brought back for the fourth Test to fill the void.
The county bowler performed better in the fourth Test, claiming a couple of wickets in Australia's first innings, before adding 28 as a batsman as one of just three teammates to reach double figures.
After bowling one over late on the first day, he returned the next day and had nightwatchman Scott Boland caught behind.
However, on the final ball of that over, he delivered a slower ball to Travis Head and immediately felt for his hamstring.
Gus Atkinson was brought back for the Melbourne match following his omission of the third.