What is an uphill task for Phantom actor Saif Ali Khan?

Phantom actor Saif Ali Khan believes that it will be an uphill task for him to make a film on his father Mansoor Ali Khan Pataudi. When asked if he is approached for a biopic on Pataudi, Saif said he is open to the idea given that the story has to be interesting. ‘Depends on the script. I feel most actors can't (do it)... it's difficult to play sports on screen convincingly. He (father) was a stylish batsman... How you imitate that. It would be embarrassment if I don't do justice to it (film) as a son," he said. Saif, 45, had earlier expressed his desire to make a documentary film on his father but the actor seems to be still toying with the idea. The "Phantom" actor thinks one can make English or bilingual film on his father but not a typical Bollywood film."May be someone can make film on him but you can't make a Bollywood (movie), he can't sing songs... You can make a bilingual or English. May be one can make English film for India depends on how the story is," he said.