Fast bowler Gus Atkinson Exacerbates the English team's Fitness Worries.
'Significant concern' for the English camp after Atkinson leaves the field suffering a hamstring problem.
Gus Atkinson added to England's injury problems upon exiting the field on the second morning of the fourth Ashes Test in the Ashes series.
The right-arm seamer experienced discomfort in his left leg post-delivery of the fourth over on Saturday.
The England team reported the 27-year-old had experienced "tightness" and was to take time off the field to undergo evaluation "in the coming hours".
The final Test of the series beginning on 4 January gets underway on Sunday, 4 January.
The English side has been without fast bowlers Mark Wood to a knee injury and Jofra Archer with an abdominal strain on the current trip.
A replacement bowler was called up as injury reinforcement.
Atkinson struggled in the opening two Tests, managing only three wickets.
He was dropped of the third Test, then recalled for the Boxing Day match as Archer's replacement.
Atkinson improved at the MCG, taking two wickets in Australia's first innings, then making 28 as a batsman being one of only three English batsmen who passed ten runs.
Post a single over late on the first day, he resumed for the second day's play and removed Scott Boland edging to the keeper.
However, towards the conclusion of the fifth over, he bowled a variation to Travis Head and immediately felt at his leg.
The English bowler was brought back for the Melbourne match having missed of the third.