
Gus Atkinson suffered a hamstring injury after bowling the last ball of Australia's fifth over in their second innings in Melbourne.
He then left the field and received first aid in the tunnel. Atkinson did not take part in the match, which Australia won by eight wickets.
The Surrey right-armer hobbled off early on day two of the fourth Test in Melbourne clutching his left leg and took no further part.
"Gus Atkinson has been ruled out for the remainder of the Ashes tour after scans confirmed he has sustained a left hamstring injury," the England Cricket Board said.
No replacement will be called up, opening the door to either Matthew Potts or Matthew Fisher who are both in the squad but have yet to play.
Atkinson is the third England quick to be sidelined after Mark Wood (knee) and Jofra Archer (side strain), leaving Brydon Carse, Josh Tongue and Ben Stokes to shoulder the attack.
England are 3-1 down ahead of the Sydney Test starting on Sunday.
They suffered back-to-back eight-wicket defeats in Perth and Brisbane and an 82-run loss at Adelaide before bouncing back to clinch a four-wicket win in Melbourne.




