Fast bowler Atkinson Compounds England's Fitness Concerns.
'Serious blow' for the English camp after Atkinson leaves the field suffering a hamstring problem.
The pace bowler increased the injury concerns plaguing England after leaving the field on the second morning in the Melbourne Test versus the Australians.
The right-arm seamer pulled up with his left leg post-delivery that he bowled on Saturday.
The touring camp reported Atkinson had experienced "tightness" and was to take time away from the action to undergo evaluation "during the day".
The final Test in this Ashes battle at the SCG begins this coming Sunday.
England have already lost fast bowlers one seamer with a knee problem and another paceman with an abdominal strain on the current trip.
A replacement bowler was added to the party as cover for Wood.
Atkinson struggled during the first two matches, claiming a mere a handful of scalps.
He was dropped for the Adelaide match, before being recalled for the Melbourne Test to fill the void.
Atkinson performed better in the fourth Test, claiming a couple of wickets with the ball, then making 28 while batting among just a trio of England players to reach double figures.
After bowling one over late on the first day, he resumed the next day and had nightwatchman Scott Boland caught behind.
However, towards the conclusion of that over, he bowled a slower ball to Travis Head and promptly felt at his leg.
Gus Atkinson returned to the side for the Melbourne match following his omission the previous Test.
