Paceman Atkinson Compounds the English team's Fitness Problems.
'Serious blow' for the touring side as Atkinson goes off due to a hamstring issue.
Gus Atkinson increased the fitness woes of the England squad after leaving the ground on the second morning of the Boxing Day Test versus the Australians.
The pace bowler experienced discomfort in his hamstring after the final ball that he bowled on Saturday.
The touring camp indicated the 27-year-old reported "discomfort" and was to take time on the sidelines in order to be assessed "over the next few hours".
The series decider in this Ashes battle at the SCG starts at the end of the week.
The English side has previously lost fast bowlers Mark Wood to a knee injury and Jofra Archer because of a side injury on this Ashes tour.
A replacement bowler was added to the party as injury reinforcement.
The seamer had a tough time early in the series, taking just a handful of scalps.
He was dropped from the previous Test, only to be brought back for the fourth Test as Archer's replacement.
The county bowler performed better in the fourth Test, bagging two scalps in Australia's first innings, then making 28 as a batsman among just a trio of England players to get into double digits.
Post a single over late on the first day, he returned the next day and dismissed the nightwatchman taken by the wicketkeeper.
However, on the final ball of that over, he delivered a variation to Travis Head and promptly felt his left hamstring.
The English bowler was recalled for the Melbourne match after being left out the Adelaide game.
