Mike Tyson has admitted that he was high on drugs during some of his fights, and even used a fake penis to avoid detection.
The former heavyweight champion revealed in his autobiography Undisputed Truth that he used cocaine and marijuana ahead of his 2000 clash with Lou Savarese.
"I had to use my whizzer, which was a fake penis where you put in someone's clean urine to pass your drug test," he wrote, explaining how he fooled dope testers.
Tyson also said that he took cocaine before a press conference with Lennox Lewis in 2002, which descended into an on-stage brawl, and ahead of his 2004 defeat to Danny Williams.
The 47-year-old was once fined $200,000 (£124,000) after testing positive for marijuana following a bout with Andrew Golota in 2000.
