Alexis Arguello (1952–2009) of Nicaragua was a three-division world champion famous for his exceptional technique, pinpoint accuracy, and devastating straight right hand.

Career Highlights

• Professional record: 80 wins, 65 by KO, 8 losses
• World champion at featherweight, junior lightweight, and lightweight
• Three classic battles with Aaron Pryor for the junior welterweight title

Arguello was a gentleman in and outside the ring — classically trained, disciplined, and respected by opponents and fans alike. His trilogy with Aaron Pryor is among the most brutal in lightweight history.

Reference:

Wikipedia: Alexis Arguello

https://en.wikipedia.org/wiki/Alexis_Arg%C3%BCello