Tyson became the lineal champion when he knocked out Michael Spinks in 91 seconds of the first round. Tyson successfully defended the world heavyweight championship nine times, including victories over Larry Holmes and Frank Bruno.
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Boxing
Boxing evolved from 16th- and 18th-century prizefights, largely in Great Britain, to the forerunner of modern boxing in the mid-19th century, again initially in Great Britain and later in the United States.