During his 10 years as an England player, from 2004 to 2014, Kevin Pietersen was one of the world's most explosive batsmen -- particularly in limited-overs cricket. "Dravid wrote me the most beautiful e-mail, explaining the art of playing spin and ever since then it was a whole new world," the former England batting star said.

from Times of India https://timesofindia.indiatimes.com/sports/cricket/news/how-rahul-dravids-advice-to-play-spin-changed-the-world-for-kevin-pietersen/articleshow/77311486.cms