Roberto Carlos Durán Samaniego is a Panamanian former professional boxer who competed from 1968 to 2001. He held world championships in four weight classes: Lightweight, welterweight, light middleweight and middleweight. Duran also reigned as the undisputed and lineal lightweight champion and the lineal welterweight champion. He is also the second boxer to have competed over a span of five decades, the first being Jack Johnson. Durán was known as a versatile, technical brawler and pressure fighter, which earned him the nickname "Manos de Piedra" ("Hands of Stone") for his formidable punching power and excellent defense. Durán is regarded by many as one of the greatest boxers of all time.
The Sporting News recognized Durán as the Fighter of the Decade for the 1970s. In 2002, Durán was voted by The Ring magazine as the fifth greatest fighter of the last 80 years, while boxing historian Bert Sugar rated him as the eighth greatest fighter of all time. The Associated Press voted him as the best lightweight of the 20th century, with many considering him the greatest lightweight of all time.