Sullivan brought it to the world, bareknuckle to gloves.
Corbet considered the first technical boxer.
Jeffries was known to take a pounding, wears his foe down, using a crouching style.
Fitzsimmons 1st 3 division champ of the sport- beat the man (Corbit) who beat the man (Sullivan)

Who ranks 1st? 2nd, 3rd 4th?