INDIAN WELLS — Billie Jean King said she's heard about the drug revelation by Andre Agassi in his book, but is reluctant to comment on it.

However, King said Agassi is a friend and she wholly supports him.

In his upcoming autobiography, Agassi admits he used crystal meth in 1997 and failed a drug test — a result he says was thrown out after he lied by saying he “unwittingly” took the substance.

“I appreciate him telling the truth,” King said. “It was probably a hard decision for him. I hope it helps someone else. It shows the human element. But I haven't read the book. I've only seen one sentence on a ticker.

“I will stand by Andre 100 percent. He has his own reasons for doing this. I have to read the book first. I'm a friend and he's the kind of guy you can trust.”

King was at the Indian Wells Tennis Garden to promote the Advanta WTT Rec League Nationals and run a clinic on Friday.

This year's league championships, which run through Sunday at the Indian Wells Tennis Garden, has attracted more than 350 players from 20 states. The 50 teams participating is one off the record of 51 teams set two years ago.

King said reporters had been calling her since Agassi's drug revelation came out earlier this week.

“I didn't read the book, so I don't think I should have any major league comments, that's for sure,” King said. “I've turned down every request so far. I don't think it's fair until I read the whole thing. I need to read it, see his truth.”

King did say Agassi talked to her and informed her he would be writing a book.

“I think he gave all of himself to this book is what I got out of it,” King said.

Although King is withholding comments, she was intrigued by Agassi's revelation.

“I would be like you, why did you want to reveal it? Why do you think it's important to reveal it?” King said. “I can come up with 1,000 questions, but I don't know what his truth is.”

King also talked about another tennis icon, Jack Kramer, who passed away in September.

In 1970, Kramer ran the Pacific Southwest tournament, that paid the women less than a fifth of the total prize money.

King led a walkout, and that eventually led to the start of the Virginia Slims Tour, which has evolved today into the WTA Tour.

When King played the legendary 1973 “Battle of the Sexes,” it was reported that King demanded that Kramer be removed from the telecast.

“I know Jack was upset with me and I was upset with him at the time in the early 70s, but we both had our reasons,” King said. “He had his reason because I walked out on him. I made a mistake, it was wrong and I told him that.”

However, the years mellowed both of them. In 1984, during the Olympics, both King and Kramer were invited to a dinner at the home of the UCLA chancellor.

“They sat me next to Jack, and I thought that was perfect,” King said. “I wanted to always talk to him calmly. Time had passed, which I thought was healthier for both of us. I knew when he bragged about his granddaughters, I had a chance to talk to him. He had four boys and came from all men in his life. We had a great talk. In my mind, we made amends.”

King said she grew up admiring Kramer and was disappointed he had retired before she got a chance to watch him live.

However, King still has one contention about Kramer and how he is portrayed.

Kramer founded the modern-day ATP Tour, and helped usher in professional tennis, or the Open era.

“I always get a kick out of people. He was always worried about men's tennis and they always acted like he did a lot for tennis. They need to say he did a lot for men's tennis, not just tennis,” King said. “Remember when I told you this? When a woman does something, it's for women's tennis. When a man does something, it's for tennis. They really need to say it's men's tennis he helped.”