India is on the cusp of scripting history as they look to walk away with the Test series against Australia. If Australia cannot beat the visitors at Sydney, it will be the first time that an Indian side will win a Test series down under. This will make Virat Kohli the most successful Indian captain in overseas conditions.

Despite being prolific with the bat, there were questions posed over Virat Kohli's captaincy and his inability to inspire his side to Test series victories in South Africa and England. However, the skipper has taken significant strides as far as his leadership and tactical acumen is concerned and has attracted rave reviews from former international skippers.

Former Indian captain Sunil Gavaskar, who had earlier said that he is not very convinced with Kohli as a captain, believes that he is still a work in progress but is a fast learner and can emerge as India's best-ever captain.

'He needs to keep learning'

Virat Kohli India Cricket team
Virat KohliCameron Spencer/Getty Images

"As a captain, I still have my little concerns but I think now what has happened, he (Virat Kohli) is a fast learner, and we have seen that in this series. If he keeps learning, he is going to be the best-ever (captain) that India has had, in terms of results and in terms of getting the players to perform at the highest level," Gavaskar told Sony Sports on Sunday.

Former Australian captain Michael Clarke, too, said that Kohli has been better as a tactician than Tim Paine which could be one of the reasons why India has dominated the series.

"I'm not saying that this is the reason, but it is definitely one of the reasons why Australia have struggled. Kohli has out captained Paine this series and this has made the Indian bowlers an even more formidable unit," Clarke told Sony Six.

Kohli as a tactician came to the fore on the 3rd day in Sydney when he plotted the dismissal of Marnus Labuschagne as the ball started to reverse. His field placements were spot on and forced the batsman into making a mistake which was spotted and subsequently applauded by pundits across the board.

Australia was knocked over for 300  in the first innings following which Kohli imposed the follow-on. But play was suspended for a major chunk of the day owing to bad light.