Roy's 101 off 84 balls was backed up by Jos Buttler who made an unbeaten 54 from just 29.
Australia, who conceded a world-record 481-6 to England in their heaviest-ever defeat at Trent Bridge two days ago, regathered to post the highest ODI total at the ground. Roy reached his fifty off just 36 balls but one shot which stood out was a back foot punch off Michael Neser to the cover boundary. With the visitors batting at 225-1 in the 40th over, a 350-run total looked to be on the cards before England's bowlers fought back valiantly in the death overs.
Although they have missed key players in this series against England, Australia's plight stems from a long-standing problem in ODIs rather than the absence of some experienced cricketers. But Bairstow and Hales played very well and they crossed 300 runs milestone jointly. nBairstow scored 139 runs and gone where Hales scored 147 runs so far.
It tells you how much ODI cricket has changed - and how quickly - that England's victory in this match seemed all but inevitable from the first moments of their chase.
Uncapped Surrey left-arm seamer Curran will now join his brother Tom in an England squad for the first time - having been named alongside him on Tuesday in the 14-man party chosen for the upcoming Twenty20s against Australia and India.
England´s Jason Roy (L) celebrates his century with England´s Jonny Bairstow during the fourth ODI between England and Australia at The Riverside in Chester-le-Street, on June 21, 2018.
Trump adviser Kushner criticizes Abbas, says US peace plan near
Israel withdrew from Gaza in 2005, and two years later, Hamas seized control of Gaza from Abbas' forces. The Palestinians want their own future state with a capital in East Jerusalem.
Phipps, Tui in for Australia for final test against Ireland
Saturday's decider will be played at the 45,000-seat Sydney Football Stadium, and Rugby Australia said the match is a sellout. The halfbacks pairing of Conor Murray and Johnny Sexton will be joined in midfield by Bundee Aki and Robbie Henshaw.
Americans celebrate ‘Take your dog to work day’
It may not be as well-known, but it allows a bit more variety in the furry friends that you are allowed to bring to your office. It was started by Pet Sitters International to celebrate the great companions dogs make and encourage their adoption.
"You wouldn't want to be any of the bowlers at the World Cup next year, knowing you'll be faced by those two".
However, they were both removed shortly after passing 100 and the lower order fell in a heap - David Willey (4-43) picking up four wickets at the end and Mark Wood impressing with his pace and ability to get the ball to angle in and cramp the batsmen for room.
Bairstow too showed what fine form he is in with a couple of boundaries of Jhye Richardson as the 100-run opening stand came in just 13.2 overs.
"We always kept Australia within our grasp, certainly until the last eight to 10 overs when they were in position to get away from us. They have a pretty good blueprint", he added. "I take full responsibility for us not getting 330-340", he added. "We like playing at Old Trafford - the challenge is to finish it off".
England's victory prospects seemed as bright as the evening sun - and the incongruous floodlights - as Roy brought up his hundred with an enormous six over midwicket off Nathan Lyon, from his 81st delivery.
Coach Justin Langer has warned Australia's struggling bowlers they need to quickly get to grips with global cricket.