Australia's relief at ending their draining summer with victory was tempered by concerns over England captain Eoin Morgan, who was treated for concussion after being struck on the helmet.
After surrendering the Ashes urn and being defeated in the one-off Twenty20, Australia faced flying home empty-handed but instead claimed the Royal London one-day series 3-2 with a one-sided eight-wicket win at Emirates Old Trafford.
England were blown away for just 138, but Morgan's retirement, after turning his head on a 90mph Mitchell Starc bouncer, provided the most worrying moment.
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The Dubliner initially remained on his feet, but was visibly unsettled, and it was no surprise when team medics ruled him out of any further involvement.
It was a particularly difficult moment for Starc, who played in the game last November when his international team-mate Phillip Hughes suffered a fatal blow while batting.
"I think there were a couple of guys that were a bit shaken up, Starcy in particular," said captain Steve Smith.
"Obviously it was a tough summer for us back home, losing a close mate (Hughes).
"Whenever anyone gets hit on the helmet like that your first concern is for their health. My concern at the moment for Eoin. I hope he's okay and he can recover well."
James Taylor, who took over as skipper during a perfunctory Australian chase comprising just 24.2 overs, believes the manner of Morgan's exit made life more difficult for England but did not quibble with the result.
"That injury probably did cost us, it's not good to see a member of your team hit like that but the guys have got to put it to the back of their minds," he told Test Match Special.
"But it's credit to Australia. We weren't good enough in that middle section and it wasn't our day."
England coach Trevor Bayliss signed off his first summer in the job in positive mood, but with a reminder that the job of rebuilding the limited-overs squad was a work in progress.
"We've shown how well we can play, but every now and again there's going to be a bit of a hiccup like there was here," he said.
"There's still work to be done, definitely, and we've spoken about it a couple of times within the group.
"To be best in world and be consistent you've also got to play some smart cricket. That comes with experience.
"Some players will make it, some won't. The best ones will be the ones who will play that positive, natural game but also play some smart cricket and pull it back when they need to."
Bayliss will join his fellow selectors today to thrash out squads for next month's trip to play Pakistan in the United Arab Emirates.