Sushant Singh Rajput, who will be portraying Indian cricketer Mahendra Singh Dhoni in the biopic 'M.S. Dhoni: The Untold Story' imitated the cricketer's iconic 'helicopter shot' at a recent event. The actor also acted out Dhoni's winning six at the 2011 ICC Cricket World Cup. Sushant added that he had to train for 13 months to "become Dhoni".