Andre Agassi Admits to Crystal Meth Use in Autobiography "Open"

Tennis star Andre Agassi serves up a bombshell in his new memoir: In the late '90s he began regularly using crystal meth. "I can't speak to addiction, but a lot of people would say that if you're using anything as an escape, you have a problem," he tells PEOPLE.

Agassi's book, Open, details his descent into drug use, as well as his hair loss, his troubled marriage to Brooke Shields and the love he eventually found with his current wife, Steffi Graf.

Asked how he thought his fans would react if they found out he was using drugs, Agassi, 39, says: "I was worried for a moment, but not for long. ... I wore my heart on my sleeve and my emotions were always written on my face. I was actually excited about telling the world the whole story."

Thanks to Alex Tresniowski