Australia have rediscovered their mojo, but simply retaining the Ashes is not enough for a world-beating side who have been pushed to their limits by England.

The hosts can make it victories in two white-ball series from two if they clinch the final ODI in Taunton on Tuesday, although the best they can do points-wise is to move to equal with Australia on eight, which will mean the overall contest is a draw and the tourists still heading home with the Ashes. Ellyse Perry, whose innings of 91 set Australia up to break a three-game losing streak in the second ODI in Southampton, said that wouldn’t do.

“That last game in Taunton is really important to us because I think a few of us have been involved in campaigns where we’ve retained the Ashes, but it’s always nice to win the Ashes so it’s a good challenge for us,” Perry said on Sunday. “It’s the last game so everyone has that in their sights.

“We’ve also probably been chasing a complete performance from the group and that hasn’t come yet. We’ve played patches of really good cricket and today, the way that we fought the whole way through and wrestled back momentum at different stages is one of our better outings on this trip, but I think there’s still a really great opportunity for us to play to our potential. That’s a great carrot and, as I said, to win the Ashes rather than retain them.”

In a quick turnaround of just over 48 hours between matches, both sides must overcome the emotion of playing through another nerve-jangling finish after Australia won by three runs on the final ball at the Ageas Bowl, Nat Sciver-Brunt’s unbeaten century taking England to the brink of another victory that would have kept the series alive.

The closeness of the contest was in keeping with the entire series, which has been hard-fought throughout, and Heather Knight, the England captain, said afterwards that victory in the final match would prove there was no longer “a gap” between the sides. Meanwhile, Alana King, the legspinner who turned the game Australia’s way with three key wickets, believes her side is still some distance ahead and keen to show it in Taunton. But Perry has a more nuanced view.

“I actually have probably a slightly different look on the gap,” she said. “If you look across the last four or five years, we’ve had lots of really, really close games against different opponents, whether that’s been India or England, New Zealand at times, South Africa. But I think something that probably has been key to those last few years has been the consistency of our play and the ability to find ways to win lots of matches.

“So I don’t know if there’s always been a huge gap. I think teams are certainly finding different ways of playing and improving and I think that’s no different for us, so we’ve got to keep evolving and keep improving. But, in terms of gap, I think it’s just that we’ve been really consistent and England have played some really consistent cricket this series so it’s pushed us often and I think we’ve pushed them as well. Hence why it’s been so tight.”

Amy Jones, the England wicketkeeper-batter, first mooted the idea that England were closing on Australia during this series after her explosive innings of 40 not out from 21 balls lifted her side to a respectable total in the first T20I at Edgbaston before the visitors managed to scrape past them by four wickets with just one ball remaining. That was a turning point for the hosts, who went on to win the next three games to claim honours in the T20 leg 2-1 and take a 1-0 lead in the ODIs, as it was the catalyst for England to play with the confidence of a side that knew their opponents were beatable.

Australia, in the unfamiliar position of losing a string of close encounters, were forced to change things up and they opted for a four-pronged spin attack for the Ageas Bowl.

King, who hadn’t played since Australia’s victory in the Test which opened the series, claimed 3 for 44 while offspinner Ashleigh Gardner – who bagged 12 wickets in the Test – took 3 for 54 and bowled a tight penultimate over before left-arm spinner Jess Jonassen reprised her role of ice-cool death bowler with great success for the third time in four ODIs against England. Jonassen had bowled the last over during the group stage and in the final of last year’s 50-over World Cup, with Sciver-Brunt also scoring a century in each of those games. At Bristol last Wednesday, Knight and Kate Cross managed to get one up on Jonassen as they guided England to victory with 11 balls to spare.

Georgia Wareham was their other spinner in Southampton, taking 1 for 47 from her 10 overs, but it was her unbeaten 37 off 14 balls, including 26 runs off Lauren Bell in the final over of Australia’s innings that lifted the total to 282 for 7, asking England to produce their second record ODI run chase in as many matches to win.

“It was really deliberate selection decision for us to have the four spinners in the team and they did an amazing job,” Perry said. “For Alana to come in and play a first white-ball game of the series and perform the way she did, Georgia’s been consistent the whole way, Ash is so dependable and then JJ closing out – I’ve just named four of the best spinners in the world there, which is amazing to have at our disposal.

“I think what our spinners have done really well is just built constant pressure. I think from a pace group, and it’s something that we’ll keep working on and it presents a really awesome opportunity for us to take our game to a new level, is just to be able to build that consistent pressure. We’ve bowled well in patches at times but often let players off the hook and with England’s aggressive approach to that, especially at the start of their innings, that’s kind of got away from us at different points in time.

“That’s why the spin has been so effective, the ability to maintain pressure throughout an over and a spell, and then that’s picked up wickets. As I said ,I think the pace group’s probably been off at different times, but that’s a really exciting thing because if we can get that right then I think there’s a complete game of cricket in us.”