John L. Sullivan

John L. Sullivan (1858-1918), American boxer, born in Boston. Sullivan became a professional prizefighter in 1878. In 1882 he won the bare-knuckle heavyweight championship of the world by knocking out the American boxer Paddy Ryan, champion since 1880, in the ninth round of a contest held in Mississippi City, Mississippi. The contest was fought with bare knuckles under London Prize Ring rules. Sullivan remained the bare-knuckle heavyweight champion of the world until his death.

Beginning with contests after 1882, Sullivan's boxing matches fought with gloves were regulated under the Queensberry rules. In 1892 he boxed the American fighter James J. Corbett to determine the first heavyweight champion of the world according to the new regulations. The fight was held at New Orleans, Louisiana, for a purse of $25,000 and a side bet of $10,000; Sullivan was knocked out by Corbett in the 21st round. Sullivan's last-known appearance in the ring was in a benefit in 1896.

During his career Sullivan engaged in 37 matches. He won 12 by knockouts and 20 by decisions, drew 3, and was knocked out once; 1 match ended in no decision. His nicknames were the Great John L. and the Boston Strong Boy, and his personal popularity did much to advance public interest in boxing.