In his autobiography, out November 9, Andre Agassi admits to using crystal meth in 1997, just one year after winning his Olympic title. The information was first leaked Tuesday when Sports Illustrated writer Richard Deitsch posted it to his Twitter feed. Deitsch removed it shortly thereafter, but not before others caught wind. A representative from Knopf, which is publishing Open: An Autobiography, subsequently confirmed the news. Having dropped to No. 141 in the rankings, 1997 was a low point for Agassi professionally. In his career, the tennis legend won eight Grand Slam championships and 60 single titles before retiring in 2006. Excerpts from his drug-use admission will be published this week in People and Sports Illustrated magazines.