In his autobiography 'KP' released here this week, Pietersen refers repeatedly to an e-mail the Indian batting legend wrote to him about playing spinners which made a massive difference to him.
"Rahul was a great and heroic Indian batsman in his day. He is also a genius at dealing with spin bowlers. Our conversations and emails were a private masterclass from a genuine guru," Pietersen writes in the book.
In the email quoted by Pietersen, Dravid refers to him as a "champ" and goes on to give him a pep talk: "KP, you are a really good player, you need to watch the ball and trust yourself... Don't let anyone tell you that you can't play spin, I have seen you and you can!"
Pietersen wrote that he often reads this particular email and it beings a smile to his face.
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"My playing of spin has gone up a number of levels since I've spent time in the IPL, and in particular, since I've spoken to Rahul Dravid...In England, batsmen get taught to play with the spin against spin bowlers. In India, the best players of spin get taught to play against it," he adds.
It has led to England captain Alastair Cook accusing him of tarnishing a successful era for the squad.