Roberto Duran (born 1951) of Panama is one of the greatest fighters in boxing history, excelling across four weight divisions over a career spanning five decades.

Career Highlights

• Professional record: 103 wins, 70 by KO, 16 losses
• World champion at lightweight, welterweight, junior middleweight, and middleweight
• Went undefeated in his first 72 professional fights

Legacy

Duran's legendary toughness, brutal body attack, and savage ring intelligence made him nearly unbeatable in his prime. His rivalries with Sugar Ray Leonard produced three of the era's most memorable bouts.

Reference:

Wikipedia: Roberto Duran

https://en.wikipedia.org/wiki/Roberto_Dur%C3%A1n