Mike Tyson, the heavyweight champion, has stated that the best punch he ever threw sent his ex-wife, Robin Givens, bouncing off the walls.

Tyson’s statement is part of a new biography that portrays the fighter as a sadistic thug.

The biography, titled “Fire and Fear: The Inside Story of Mike Tyson,” gives an insider’s view of the volatile champion.

Jose Torres, a former light heavyweight champion, was a member of the Tyson camp until they had a falling out last year.

Torres has 12 hours of taped conversations with the champion and said Tyson encouraged him to write the book.

Tyson told Torres that he never hit an opponent as hard as he did Givens.

He said that she had offended him, and he went “BAM.” Givens flew backward and hit every wall in the apartment.

Tyson said, “That was the best punch I’ve ever thrown in my entire life.”

Tyson and Givens had a stormy one-year marriage, highlighted by her nationally televised claim that Tyson often terrorized her.

Tyson denied abusing Givens and once told a group of writers that if he ever hit her, she would disintegrate.

Excerpts of the book provided by its publisher, Warner Books, Inc., indicated that Givens was not the only woman abused by Tyson.

Tyson is quoted as saying, “I like to hurt women when I make love to them. I like to hear them scream with pain, to see them bleed.”

The book also provides unflattering portraits of a gold-digging Givens and an anti-Semitic Don King.

Torres writes of Givens screaming at one of Tyson’s representatives at Merrill Lynch: “I want my money! Where is my money? You’re one of Cayton’s boys. We’re going to take our money out of here.”

Tyson’s managers were Jim Jacobs and Bill Cayton.

Jacobs has died, and Cayton and Tyson are embroiled in a bitter court fight over the champion’s finances.

King, the wild-haired fight promoter who has taken over as Tyson’s adviser, is quoted as telling Torres, “You know very well, Jose, that the Jews want to control Tyson … The Jacobses, the Caytons. You know it.”

Torres claims the book is not intended to hurt Tyson, and that Tyson encouraged him to write it.

Torres said, “From two or three excerpts, it appears like a hatchet job. It is not.”

Tyson is known for his killer instinct in the ring.

Talking about his 1986 first-round knockout of Jesse Ferguson, Tyson says, “I was trying to push his nose bone up into his brains.”

Tyson has a 36-0 record with 32 KOs, having battered Michael Spinks, Larry Holmes, and Bonecrusher Smith.

The biography portrays Tyson as a sadistic thug with a killer instinct.

Tyson said the best punch he ever threw sent Robin Givens bouncing off the walls.

Tyson denied abusing Givens and said they married only because Givens lied and said she was pregnant.

Excerpts of the book provided by its publisher, Warner Books, Inc., indicated that Givens was not the only woman abused by Tyson.

Tyson is quoted as saying, “I like to hurt women when I make love to them.

I like to hear them scream with pain, to see them bleed.” The book also provides unflattering portraits of a gold-digging Givens and an anti-Semitic Don King.

Tyson’s managers were Jim Jacobs and Bill Cayton.

Jacobs has died, and Cayton and Tyson are embroiled in a bitter court fight over the champion’s finances.

King, the wild-haired fight promoter who has taken over as Tyson’s adviser, is quoted as telling Torres, “You know very well, Jose, that the Jews want to control Tyson … The Jacobses, the Caytons. You know it.” Tyson has a 36-0 record with 32 KOs, having battered Michael Spinks, Larry Holmes, and Bonecrusher Smith.

The biography portrays Tyson as a sadistic thug with a killer instinct.

Tyson’s managers were Jim Jacobs and Bill Cayton.

Jacobs has died, and Cayton and Tyson are embroiled in a bitter court fight over the champion’s finances.

Talking about the book, Torres said Tyson encouraged him to write it.

He has 12 hours of taped conversations with the champion.

Torres said, “From two or three excerpts, it appears like a hatchet job. It is not.”

Tyson said the couple married only because Givens lied and said she was pregnant.

Tyson denied abusing Givens and said that if he ever hit her, she would disintegrate.