Fast bowler Atkinson Compounds the English team's Fitness Concerns.
'Major setback' for the English camp after Atkinson is forced off with a hamstring injury.
Gus Atkinson further complicated England's injury problems upon exiting the ground early on day two in the Melbourne Test against Australia.
The right-arm seamer pulled up with his left leg after the final ball of the fourth over at the MCG.
The touring camp stated the 27-year-old reported "discomfort" and would spend time away from the action to undergo evaluation "during the day".
The final Test of the tour at the SCG begins on Sunday, 4 January.
The English side has been without strike bowlers one seamer to a knee injury and Jofra Archer to a side strain on the current trip.
A replacement bowler was added to the party as injury reinforcement.
The seamer had a tough time during the first two matches, managing only a handful of scalps.
He was dropped from the previous Test, then recalled for the fourth Test in the playing XI.
The county bowler improved at the MCG, bagging two scalps during the host's first knock, then making 28 while batting among just a trio of English batsmen to reach double figures.
After bowling one over at the end of day one, he resumed the next day and had nightwatchman Scott Boland caught behind.
Unfortunately, on the final ball of his spell, he delivered a change of pace to the batsman and suddenly grabbed for his hamstring.
Atkinson returned to the side for the Boxing Day Test following his omission the previous Test.