Kohli along with Joe Root, Kane Williamson and Steven Smith are considered to be the four top batsmen in world cricket but Shastri feels that the Indian skipper is in a league of his own.
Kohli finished with 558 runs including three centuries in the just-concluded ODI series against South Africa, which India won 5-1.
Its not just about averages, it is the way you get runs, when you get it, and the impact those runs have on what the team does. I would simply say he is the best batsman in the world now, Shastri declared at the post series media interaction.
You spoke of intensity. Where does the intensity come from? When you have a leader like that, who leads by example, the other guys jolly well follow. Otherwise they know what to expect. That's the beauty about this team on this trip where I feel proud as a coach about my boys and the intensity they showed, the former India captain said.
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The best part for Shastri was the comeback after being 0-2 down in the Test series.
"Entire credit should go to the leader because he has led from the front, first with his batting and then as I said with his intensity, which makes other people in the team also up the ante, he added.
The coach praised Kuldeep Yadav and Yuzvendra Chahal for their good show as India now have more wicket-taking options in the middle overs, something that they team lacked a couple of years earlier.
"They bring great variety its great for the viewer, its great for the spectator to see that kind of variety when they come to watch a cricket match. Not just batting or fielding, but some classic spin bowling, the coach said.
Bumrah is a world-class operator across all formats. And you know hes just shown on this tour and how quickly he has matured. You cant imagine the first Test in Cape Town was his debut. You have seen him here today and he has gone through the three Test matches, he has gone through the six One-Day Internationals and hes not let up even once, which augurs well for us. But yes, we have to look after our fast bowlers and make sure they are well rested as well, he had a word of caution.
(In terms of World Cup preparation) Very good, because it is one step at a time. We have learnt some good habits on this trip. This is a young side and they have got a lot of tough tours coming up. I think they have conducted and handled themselves extremely well on this tour," Shstri said.
Shastri also rubbished theories that it was weak South African side that was on the park during the ODI side. South Africa missed Faf du Plessis during the last five games while AB de Villiers did not play in the first three games. Not to forget Quinton de Kock who was also ruled out after first three games, even though he was out of form.
"I have followed this game for a long time. I have been a broadcaster as well and covered a lot of South Africas games and I know how they play. So I would like my boys to enjoy every bit of this series win. Whatever the score line is they must enjoy because it doesnt happen every day, Shastri said.