Fast bowler Gus Atkinson Adds to England's Fitness Worries.
'Serious blow' for England after Atkinson goes off suffering a hamstring problem.
The English seamer further complicated the fitness woes of the England squad after leaving the ground on the second morning of the fourth Ashes Test in the Ashes series.
The pace bowler pulled up with his hamstring post-delivery that he bowled at the MCG.
Team management indicated the 27-year-old had experienced "tightness" and was to take time off the field for further assessment "during the day".
The final Test of the tour at the SCG begins on Sunday, 4 January.
England have previously lost key quicks Mark Wood to a knee injury and Jofra Archer with an abdominal strain during this series.
Matthew Fisher was brought into the squad as injury reinforcement.
Atkinson struggled early in the series, taking just a handful of scalps.
He was dropped from the previous Test, before being recalled for the Boxing Day match in the playing XI.
The county bowler performed better in the fourth Test, bagging two scalps with the ball, before adding 28 while batting among just a trio of English batsmen to get into double digits.
Following a brief spell in Australia's second innings, he resumed on Saturday morning and had nightwatchman Scott Boland caught behind.
Yet, on the final ball of the fifth over, he delivered a change of pace to Travis Head and suddenly grabbed for his hamstring.
The English bowler was recalled for the fourth Ashes Test having missed the previous Test.