Eddie Jones believes England had to win the first Test in order to have any chance of beating Australia in the three-match series after witnessing his side claim a thrilling 39-28 victory over the Wallabies.
Australia made a fast start to Saturday's contest at Suncorp Stadium, as tries from Michael Hooper and Israel Folau saw them open up an early 10-0 lead.
But Owen Farrell kicked 24 points and Jonathan Joseph, Marland Yarde and Jack Nowell scored tries as England turned things around and then held off a late revival from the hosts to claim a first win in Brisbane.
Speaking after the match, Jones told Fox Sports: "It's England's first ever win in Brisbane and everyone was tipping Australia to whitewash us.
"We did a few good things in the game, we defended poorly at times and absolutely superbly at times.
"We weren't used to the speed of the Wallabies in the first 10 minutes, then we managed to find the pace of the game.
"We want to win the series and to win the series you have to win this Test, particularly when you're an away team."
Captain Dylan Hartley, meanwhile, was keen to urge calm over England's display, adding: "First and foremost the result was key for us, we're going to keep our feet on the ground. To get the result was a good way to start our campaign.
"I think they had a lot of ball in the first 20 minutes, we struggled to get a foothold in the game, we struggled to get field position. Great character by the boys to dig in there [at the end], I was on the edge of my seat."