Below is a link to a list of longest reigning heavyweight champions in boxing history.
http://en.wikipedia.org/wiki/Longest...ight_champions
As of today, Wladimir Klitschko has passed John L Sullivan to become the 4th longest reigning heavyweight champion in history.
http://en.wikipedia.org/wiki/Longest...ight_champions
As of today, Wladimir Klitschko has passed John L Sullivan to become the 4th longest reigning heavyweight champion in history.
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