Paceman Atkinson Compounds the English team's Fitness Problems.
'Major setback' for England as Atkinson leaves the field with a hamstring injury.
The pace bowler increased the fitness woes of the England squad after leaving the ground during Saturday's play of the Boxing Day Test versus the Australians.
The right-arm seamer felt a problem in his left leg immediately following a delivery in his spell on Saturday.
Team management reported the 27-year-old reported "discomfort" and was to take time off the field for further assessment "in the coming hours".
The concluding match in this Ashes battle at the SCG gets underway this coming Sunday.
The visitors have previously lost key quicks one seamer to a knee injury and another paceman to a side strain during this series.
Matthew Fisher was added to the party as cover for Wood.
His form was underwhelming early in the series, taking just three wickets.
He was dropped from the previous Test, then recalled for the fourth Test as Archer's replacement.
Atkinson performed better in the fourth Test, taking two wickets during the host's first knock, then making 28 while batting among just a trio of English batsmen who passed ten runs.
Following a brief spell in Australia's second innings, he returned the next day and removed Scott Boland Scott Boland caught behind.
Yet, towards the conclusion of that over, he sent down a change of pace to the batsman and suddenly grabbed at his leg.
Atkinson was brought back for the Melbourne match having missed the Adelaide game.
