Seamer Atkinson Adds to the English team's Injury Concerns.
'Serious blow' for the touring side as Atkinson is forced off due to a hamstring issue.
Gus Atkinson further complicated the fitness woes of the England squad when he left the ground on the second morning of the fourth Ashes Test versus the Australians.
The pace bowler felt a problem in his left hamstring post-delivery in his spell during the morning session.
Team management indicated the 27-year-old had experienced "tightness" and was to take time away from the action to undergo evaluation "during the day".
The concluding match in this Ashes battle at the SCG starts on Sunday, 4 January.
The English side has already lost key quicks Mark Wood to a knee injury and Jofra Archer to a side strain on the current trip.
Matthew Fisher was called up as injury reinforcement.
The seamer had a tough time during the first two matches, claiming a mere three wickets.
He was left out from the previous Test, then recalled for the fourth Test to fill the void.
Atkinson performed better in the fourth Test, bagging two scalps with the ball, before adding 28 as a batsman among just a trio of teammates to reach double figures.
After bowling one over at the end of day one, he resumed for the second day's play and removed Scott Boland edging to the keeper.
Yet, at the end of his spell, he sent down a change of pace to Travis Head and promptly felt for his hamstring.
Atkinson was recalled for the Boxing Day Test having missed the previous Test.