Dhaka, Aug. 29 -- Rajkummar Rao is not sparing any effort for Sourav Ganguly's biopic. Sushant Singh Rajput trained for about a year and a half to become the on-screen Dhoni, spending time with MS Dhoni. Ranveer Singh stayed at his house for ten days to portray the character of Kapil Dev on screen.

Rajkumar Rao is going to follow the same formula. Rajkumar will stay with Sourav Ganguly for a month so that he can get to know and understand him closely.

The shooting of the biopic was supposed to start last July. But Rajkumar needs more preparation to play the role of Sourav. Especially, he needs more practice to master left-handed batting. So, the shooting has been postponed to next year.

It is learnt that Rajkumar Rao will go to Kolkata...