We used to call him atankwadi (terrorist). He used to hit 40-50 runs in 20 balls. But he became a saint when he played for the country and changed his approach. He is a good learner, said Dhoni's close friend and former Bihar teammate Satya Prakash while interacting with Sportstar. Dhoni rarely captained in the past, but see how he became the captain of some all-time great players, he added.