Len Wickwar boxed 3985 rounds during his career
Here is a link on the topic but I believe it was well over 100 rounds possibly even 200 rounds but the rounds back then ended iimmediatelywhen any one was knocked down granted they beat the count rounds-http://www.bigsiteofamazingfacts.com/wha...
It's probably difficult to know for sure because records tend to be a bit scratchy in the early days, but I guess Archie Moore would be up there, and guys like Jack Dempsey used to fight all the time.
the likes of Archie Moore, Sam Langford, Sugar Ray Robinson and Joe Jeanette are big contenders, but i'm not entirely sure who, it could even be someone like John L Sullivan lol, who knows.
