Darren Lehmann says David Warner has "struggled" on this tour of the West Indies and the pre-Ashes tour matches are an important chance for him, Chris Rogers and Shane Watson to post the runs they need leading into the first Test in Cardiff.
Warner told ESPN CricInfo he's made a conscious effort in the Caribbean to tone down his aggressive and boisterous approach and his change in persona has been so obvious to the playing group that Lehmann spoke to him about it earlier in the tour.
The left-hander's new attitude hasn't immediately paid dividends on the field; he finished with 62 in the second innings here in Kingston after scoring 8, 28 and 0 earlier in the series, although it's worth noting he was twice undone by deliveries that reared off a length.
"I think he's struggled this tour," Bupa Support Team head coach Lehmann said of Warner.
"He batted well in the second innings here. It would be nice for him to get some big runs again.
"At the end of the day, he's about making runs and that's what we need from him.
"We want performances to make sure everyone is up and firing for that first (Ashes) Test match.
"We know it's going to be really important to get off to a good start. The tour games are important for us, those two four-day games."
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Another player who is desperate for time in the middle leading into the Ashes is Watson, who made scores of 11 and 25 batting at No.6 in his only two innings on this tour.
Such was the dominance of Australia's bowlers in the Test series, Watson was only required to bowl 16 overs across the two matches, picking up the wicket of Jason Holder on Sunday.
England's batsmen are expected to put up more of a fight than the youthful Windies side did here, and Lehmann has re-iterated his desire to include a batting allrounder in the side to give captain Michael Clarke the option of a fifth bowler.
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That all but guarantees either Watson or Mitchell Marsh an Ashes berth, but the veteran will be out to post a big score in the coming weeks to keep the prodigiously talented Marsh out of the side.
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"He would have liked more runs," Lehmann said of Watson.
"I thought he bowled really well today. He had some pace back which is pleasing. So he’s getting there.
"We want our allrounders making runs and taking wickets and he did that today.
"I can’t speak on behalf of (selector) Rodney Marsh (but) I’m pretty sure we’ll do that (pick a batting allrounder).
"We’ve done that for the last couple of years. We certainly like that fifth bowling option.
"You see if a bowler goes down you are left well short so you really need to have that option in your side. Depending on the wickets and conditions, obviously.”
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Rogers sat out the two-Test series against the Windies due to concussion and was replaced at the top of the order by Shaun Marsh, who pushed his case for an Ashes debut with an innings of 69 in Kingston on Saturday.
The Ashes is set to be Rogers's swansong on the international stage, but the left-hander is yet to prove he's fit enough to the return to the side after he copped a blow on the helmet in Dominica two weeks ago.
He only returned to the nets on Friday after experiencing the lingering symptoms of concussion since the knock and the 37-year-old is hopeful of getting some time in the middle alongside Ryan Harris in a practice match on the Isle of Wight, which starts on Thursday.
If not, Rogers will target the match against Kent in Canterbury from June 25 and the one that follows against Essex in Chelmsford on July 1-4.
"There's no guarantees with anything in our XI at the moment, to be perfectly honest," Lehmann said when asked about Rogers.
"What we do know is you have to perform well day in and day out.
"He's got a few tour games to prove he's back to full fitness to start with, and making runs is important for us."
The Australians will celebrate their series win here and enjoy a day off before flying to the UK on Tuesday, while Mitch Marsh and reserve wicketkeeper Peter Nevill flew out on Sunday with the view to them playing in the practice match with Harris this week.
An even bowling performance has seen Australia wrap up the second Test by 277 runs in Jamaica to sweep the series and retain the Frank Worrell Trophy