How Do You Rank Sullivan, Corbitt, Jeffries, Fitzsimmons?

[Master]

You have to go by the record book but Sullivan was bare knuckle champion.

If I had to pick Jeffries, Fitz, Corbitt and then Sullivan.

Ok,
Jeffries, then Sullivan Fitz, Corbitt for me !

There is a black and white film starring Errol Flynn who plays Corbett and beats an old Sullivan.