Tennis: This player created much of a controversy with his revelations in his book 'Open:An autobiography'. Who?

Andre Agassi's autobiography 'Open' (published in 2009) contained revelations about his drug use and hatred of tennis, creating significant controversy. The book discussed his crystal meth use in 1997 and his strained relationship with the sport. Becker, McEnroe, and Sampras have written books but without similar controversial revelations.