AUTHOR INFORMATION: Boris Becker is one of the most celebrated tennis players of the modern era. A six times Grand Slam Champion and former World Number One, Boris became the youngest-ever winner of the Wimbledon Championships in 1984, and went on to win the competition in 1985 and 1989. He currently coaches the World Number 1, Novak Djokovic.GHOST WRITER:Christopher Bowers is a writer and journalist whose books include Roger Federer: Spirit of a Champion and Novak Djokovic: The Sporting Statesman.