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the fight took place in Tokyo, Japan.
The first person to beat Mike Tyson when he was the heavyweight champion was Buster Douglas. Here's the full list of Tyson's fights, with wins, loses and draws: http://en.wikipedia.org/wiki/Mike_Tyson#Professional_boxing_record
James "Buster" Douglas beat Mike Tyson in Japan on Feb 11, 1990. Douglas was 42-1 underdog.
Tyson's first professional loss was to Buster Douglas for the IBF/WBA/WBC heavyweight titles in 1990.
Tyson's Greatest Fights - 1985 Tyson vs- Buster Douglas 1-1 was released on: USA: February 1990
Buster Douglas
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As a Pro, James Buster Douglas allthough buster douglas knocked mike tyson down and eventually beat him he wasnt the first to knock him down,the first person as a pro to knock him down was tony tnt tucker in a world title bout but the ref said it was a slip but was quite clearly seen as a punch to the head that did it als o james smith did the same but was looked at as a slip
Buster Douglas
Buster Douglas via Bio. on Tyson in Answers.com
James "Buster" Douglas was 42/1 when he beat Mike Tyson.
Tyson suffered the first lost of his career to James "Buster" Douglas in 1990 in tokyo , japan (: