India have taken a 131-run lead in the first innings after scoring 326 against Australia's 195.

The debutant says facing an international quality bowlers in Jasprit Bumrah, Mohammed Shami and Umesh Yadav at nets over last few overseas Test series was a huge confidence booster.

The debutant, who looked in firm control of his innings with a 65-ball 45, was caught behind by Tim Paine after he nicked an outswinger by Pat Cummins.

Gill hit five fours in a well-paced second wicket partnership with Cheteshwar Pujara as the pair helped India get over the early dismissal of Mayank Agarwal.

Ravindra Jadeja took a smart catch over the cover to end Matthew Wade's innings at 30 to R Ashwin.

Gill was handed India's 297th Test cap by head coach and former Indian all-rounder Ravi Shastri while the 298th Test cap was given to Siraj by veteran teammate Ravichandran Ashwin. 

Gill, 21, has been making all the right noises in the past three years, especially since the 2018 under-19 World Cup, where he was adjudged the Man of the Tournament.

While Kohli's absence can never be really compensated for, Rahane would like to show his character by promoting himself up the batting order.

Shubman Gill comes in for Prithvi Shaw, Ravindra Jadeja for Virat Kohli, Rishabh Pant for Wriddhiman Saha, and Mohammed Siraj for Mohammad Shami.

In contention for the opener's slot, Gill showed great technique and composure during his 43 and 65 in the two innings against Australia 'A' in the pink-ball warm-up.

Agarkar feels Shubman fits better in lower middle-order than as an opener for the pink-ball Test.

The former Indian opener says that 21-year-old Gill was ticking the ‘technical boxes’ on Saturday during his flawless 78-ball 65 knock in the warm-up game.

Even as Vihari showed great composure and patience in collecting his runs, Pant was quite at ease while clearing the fence.

Virat Kohli-led Indian side is set to begin its title defence of the Border-Gavaskar trophy with the pink-ball Test in Adelaide from December 17.

Gill hits a flawless 78-ball 65, which was followed by a gritty half-century by Mayank Agarwal as India stretched their first innings lead over 200 runs.

It was a poor start in whites for India's young opening duo, as both Gill and Shaw were dismissed for ducks.

The Test series between India and Australia starts on December 17 with the day/night match in Adelaide.

Rated as rising star of Indian cricket, Shubman Gill is now in the thick of things with being picked for India-Australia ODI and Test teams after being part of the Indian contingent for New Zealand before lockdown this year.

KKR should release the likes of Sunil Narine, Pat Cummins, Eoin Morgan and Dinesh Karthik while letting 21-year-old Shubman Gill take over as the captain, said former India batsman Aakash Chopra.

Gill has so far played only two ODIs for India and is part of the limited-overs as well as the Test squad for the Australia tour beginning on Friday.