Earlier, the left-arm spinner, who returned from a knee injury, was the wrecker-in-chief during the second session as he broke the partnership between Steve Smith (37) and Marnus Labuschagne (49) before trapping Matt Renshaw and Todd Murphy.
Earlier, Mohammed Shami (1/12) and Mohammed Siraj (1/13) removed Usman Khawaja (1) and David Warner (1) in quick succession but Labuschagne (47) and Smith (19) led the Australian fight back in an engaging first session where they didn't let India's spin troika get better of them.
Labuschagne, who hit eight shots to the fence in his 110-ball innings, played the role of an enforcer whereas his senior Smith defended doggedly during his 74-ball stay, nullifying the Indian spinners to a great extent in their 74-run stand for the third wicket.
All the pre-match talk by a section of Australian media about doctored pitches seemed presumptuous as the VCA Stadium track seemed like a typical dry Indian wicket, which will gradually offer significant turn from second day onwards.
There is turn on offer but that is standard for Indian wickets and the manner in which Smith and Labuschagne played showed that good technique is key to adaptability in any conditions.
Pat Cummins did win a good toss and opted to bat as batting fourth would be an onerous task on a pitch which will deteriorate as the match progresses. A first innings score of 275 could put Australia in a very good position to dictate terms in this game.
Khawaja got a classical outswinger from Siraj (inswinger for southpaw) and Rohit Sharma was right in taking the DRS which went in India's favour.
In case of Warner, Shami came around the wicket and fired from wide of the crease and the angular delivery sent the left-hander's off-stump for a cartwheel.
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India looked in control before world No. 1 Test batter took charge. Labuschagne started with a picture-perfect straight drive off Siraj and then deliberately used the pace of his delivery to get boundary through vacant fourth slip region.
But two of his best shots were -- late cut off Axar's bowling and an inside-out cover drive off Ashwin.
Ashwin was trying to peg the batters on the leg-stump line but his ploy at least in first session hasn't worked well.
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