Paceman Gus Atkinson Adds to the English team's Injury Worries.
'Major setback' for England after Atkinson goes off suffering a hamstring problem.
The pace bowler increased the fitness woes of the England squad upon exiting the field on the second morning in the Melbourne Test versus the Australians.
The right-arm seamer experienced discomfort in his left leg post-delivery in his spell during the morning session.
The touring camp indicated the 27-year-old had experienced "tightness" and would spend time away from the action in order to be assessed "over the next few hours".
The series decider of the series in Sydney begins on Sunday, 4 January.
The English side has previously lost fast bowlers Mark Wood to a knee injury and Jofra Archer to a side strain during this series.
Matthew Fisher was brought into the squad to provide backup.
Atkinson struggled early in the series, managing only a handful of scalps.
He was dropped for the Adelaide match, only to be brought back for the Boxing Day match in the playing XI.
Surrey's Atkinson improved at the MCG, taking two wickets during the host's first knock, and scoring 28 runs with the bat as one of just three England players to reach double figures.
Following a brief spell in Australia's second innings, he returned for the second day's play and dismissed the nightwatchman edging to the keeper.
However, on the final ball of his spell, he delivered a slower ball to the batsman and immediately felt his left hamstring.
Gus Atkinson returned to the side for the fourth Ashes Test after being left out the Adelaide game.