Sunday showdown: India take on Australia in a clash of World Cup favourites

London: India's quest for glory will face a stern test in formidable Australia, forcing Virat Kohli and Ravi Shastri to put their thinking caps on and contemplate a tactical rejig, as one of World Cup's most storied rivalries resumes here on Sunday.

India were clinical in their six-wicket victory against a depleted South Africa while Australia, who have raised their game in the last couple of months, were professional against Afghanistan and brilliant in their come-from-behind victory against the West Indies.

Having struggled in the past one year after suspensions of Steve Smith and David Warner, Australia finally seemed to have picked their pieces and are playing exactly like a five-time champions ought to. This will certainly be a cause of worry for India, who lost their ODI series at home during the last bilateral encounter and are still in search of a perfect combination both in batting and bowling.

In fact, Australia's batting coach Ricky Ponting is apprehending a shift in strategy from the Indians, who have of late rattled them with quality pace bowling. "Do they maybe go with only the one spinner and use (all-rounder) Kedar Jadhav as a second spinner and play another fast bowler?" Ponting told cricket-com.au recently.

"We'll worry about that in the next couple of days and make sure all the boys are prepared," he added.

In the last series, the Australians effectively nullified India's spin twins Kuldeep Yadav and Yuzvendra Chahal on the flat sub-continental decks, sans Warner and Smith. Skipper Aaron Finch and Usman Khawaja also got a grip of Kedar Jadhav's side-arm off-spin and this will certainly force the captain and coach to explore options.

With the presence of the two talismans in the opposition ranks, India may have to tweak their playing XI, keeping the Oval pitch and the overcast conditions in mind.

They have already served warning signals with a half-century each in their first two games. Mohammed Shami, who was dropped from the playing XI against South Africa, is likely to make a comeback in the playing XI.

Shami was dropped purely for strategic reasons because of the Proteas' inability to counter the two wrist spinners. But the current Australian team could be more susceptible against the pace of Jasprit Bumrah and craft of Shami.

Bhuvneshwar Kumar, who looked rusty during his first spell against South Africa, was impressive in the second, with a couple of wickets to show for his effort. In case India decide to retain both the wrist spinners and get Shami in the playing XI, then Bhuvneshwar will have to make way. And in case one of the two spinners is dropped, then Chahal, despite his four-wicket-haul might make way for Kuldeep, who has had better success rate against the Australians.

It must be recalled that Chahal played only one game against Australia, at Mohali, in the home series, and gave away 80 runs in 10 wicketless overs. Kuldeep is expected to be more effective because of the bounce and dip that he gets apart from his stock delivery being the one that will leave the left-handers.