Fast bowler Atkinson Adds to the English team's Fitness Problems.
'Serious blow' for the English camp as Atkinson leaves the field with a hamstring injury.
Gus Atkinson further complicated the fitness woes of the England squad upon exiting the playing area early on day two of the fourth Ashes Test versus the Australians.
The right-arm seamer pulled up with his left leg immediately following a delivery of the fourth over on Saturday.
The England team indicated the 27-year-old reported "discomfort" and was to take time off the field for further assessment "over the next few hours".
The final Test of the series at the SCG begins this coming Sunday.
England have already lost fast bowlers one seamer with a knee problem and Jofra Archer with an abdominal strain on the current trip.
A replacement bowler was called up to provide backup.
Atkinson struggled early in the series, taking just a handful of scalps.
He was left out for the Adelaide match, before being recalled for the Boxing Day match as Archer's replacement.
Surrey's Atkinson showed better form in Melbourne, claiming a couple of wickets in Australia's first innings, then making 28 with the bat as one of just three England players who passed ten runs.
Post a single over at the end of day one, he resumed for the second day's play and removed Scott Boland Scott Boland caught behind.
Unfortunately, towards the conclusion of that over, he sent down a slower ball to the batsman and suddenly grabbed his left hamstring.
Gus Atkinson returned to the side for the fourth Ashes Test after being left out the previous Test.
