Opener Shubman Gill's maturity impresses captain Rohit Sharma

Gill smashed a career-best 208 against NZ on a flat track and was adjudged Player of the Series for his aggregate of 360 in 3 innings

It might be premature to say Shubman Gill has nailed down the India opener's slot for next year's Cricket World Cup on home soil but skipper Rohit Sharma has been impressed by the 23-year-old's understanding of his role.

With veteran Shikhar Dhawan's patchy form effectively taking him out of the running for a place at the tournament, India have zeroed in on Gill and Ishan Kishan as Rohit's potential opening partners.

Gill has grabbed the opportunity with both hands and his 112 against New Zealand on Tuesday was his third hundred in four innings, which include a double hundred in the series opener in Hyderabad.

Read | Australia series won't be easy, but we are up for it: Rohit

Gill and Rohit forged a 212-run stand on Tuesday to set up a 3-0 series sweep as India dethroned New Zealand as the top-ranked one-day team.

"He understands his batting, he paces his innings well," Rohit told reporters after their 90-run victory in Indore.

"That is what you want in one-day cricket. You want to go big, you want to go deep in your innings. He has shown that. He has got big hundreds."

Gill smashed a career-best 208 against New Zealand on a flat track in Hyderabad and was adjudged Player of the Series for his aggregate of 360 from three innings.

"No matter how flat the pitch is, to get a double hundred is not easy. In that game, the next best score (by a team mate) was 34," Rohit said.

"It shows that he was calculative and he knows that he needs to bat deep.

"A set batsman needs to bat for as long as possible... He has got great maturity in the way he thinks about his game, the way he approaches the game."