Sugar Ray Robinson
Lightweight, welterweight, middleweight, light heavyweight
Sugar Ray Robinson (born Walker Smith Jr.; May 3, 1921 – April 12, 1989) was an American professional boxer who competed from 1940 to 1965
Muhammad Ali born Cassius Marcellus Clay Jr January 17, 1942 – June 3, 2016. Ali was an American professional heavyweight boxer, nicknamed "The Greatest"
Michael Gerard "Mike" Tyson (born June 30, 1966) hard hitting American heavyweight boxer who competed from 1985 to 2005
Floyd Mayweather Jr
Floyd Mayweather, Jr., (born February 24, 1977, Grand Rapids, Michigan, U.S.), With an impressive unbeaten record, he is one of the best pound-for-pound fighters of all time.