Fast bowler Gus Atkinson Compounds England's Fitness Concerns.
'Major setback' for England as Atkinson goes off due to a hamstring issue.
The pace bowler further complicated England's injury problems after leaving the field early on day two of the Boxing Day Test against Australia.
Atkinson pulled up with his left leg post-delivery in his spell at the MCG.
Team management indicated Atkinson reported "discomfort" and would spend time away from the action for further assessment "over the next few hours".
The series decider of the tour beginning on 4 January starts on Sunday, 4 January.
England have been without fast bowlers Mark Wood with a knee problem and another paceman because of a side injury during this series.
Matthew Fisher was added to the party as cover for Wood.
Atkinson struggled during the first two matches, taking just three wickets.
He was dropped for the Adelaide match, only to be brought back for the fourth Test in the playing XI.
The county bowler showed better form in Melbourne, bagging two scalps with the ball, and scoring 28 runs while batting being one of only three England players to get into double digits.
Post a single over late on the first day, he returned the next day and had nightwatchman edging to the keeper.
However, at the end of his spell, he sent down a change of pace to the batsman and promptly felt his left hamstring.
The English bowler returned to the side for the Melbourne match following his omission the Adelaide game.
