Walker Smith Jr., better known as Sugar Ray Robinson, was an American professional boxer who competed from 1940 to 1965. He was inducted into the International Boxing Hall of Fame in 1990. He is often regarded the greatest boxer of all time.
Robinson was a dominant amateur, but his exact amateur record is not known. It is usually listed as 85–0 with 69 knockouts, 40 in the first round. However it has been reported he lost to Billy Graham and Patsy Pesca as a teenager under his given name, Walker Smith Jr. He turned professional in 1940 at the age of 19 and by 1951 had a professional record of 128–1–2 with 84 knockouts. From 1943 to 1951 Robinson went on a 91-fight unbeaten streak, the third-longest in professional boxing history. Robinson held the world welterweight title from 1946 to 1951, and won the world middleweight title in the latter year. He retired in 1952, only to come back two-and-a-half years later and regain the middleweight title in 1955. He then became the first boxer in history to win a divisional world championship five times.