The answer now that I think of it is obvious as to who was the baddest street fighting boxer, John L. Sullivan was said to have knocked out over 400 men, when he went into a bar and said I can lick any S.O.B in the house he wasn't playing
Rubin Carter and Jack Dempsey. Dempsey had hundreds of fights growing up. Carter I read fought just about anyone who pissed him off.
http://trove.nla.gov.au/newspaper/a...rbett tale of the tape sullivan&searchLimits= There is some pretty interesting stories about some of he old timers mostly avoiding street fights.