Fast bowler Gus Atkinson Exacerbates England's Injury Problems.
'Significant concern' for the touring side as Atkinson goes off due to a hamstring issue.
Gus Atkinson further complicated the fitness woes of the England squad when he left the playing area during Saturday's play of the Boxing Day Test against Australia.
The pace bowler felt a problem in his left hamstring post-delivery in his spell on Saturday.
The England team stated Atkinson felt some "soreness" and was to take time away from the action to undergo evaluation "during the day".
The concluding match of the series at the SCG starts on Sunday, 4 January.
England have been without key quicks one seamer to a knee injury and another paceman with an abdominal strain on the current trip.
A replacement bowler was called up as cover for Wood.
The seamer had a tough time early in the series, taking just three wickets.
He was left out of the third Test, only to be brought back for the Melbourne Test as Archer's replacement.
Surrey's Atkinson showed better form in Melbourne, bagging two scalps with the ball, and scoring 28 runs while batting as one of just three England players to reach double figures.
After bowling one over late on the first day, he resumed for the second day's play and dismissed the nightwatchman edging to the keeper.
Yet, on the final ball of that over, he delivered a slower ball to the batsman and promptly felt his left hamstring.
The English bowler was recalled for the Melbourne match after being left out the previous Test.
