Pipino Isidro Cuevas González (born December 27, 1957) is a Mexican former professional boxer who competed from 1971 to 1989. He held the WBA welterweight title from 1976 to 1980. Cuevas was inducted into both the International Boxing Hall of Fame, and the World Boxing Hall of Fame. Professional career Cuevas turned professional at age 14; he won only seven of his first twelve bouts but eventually put together an eight bout winning streak before losing to Andy Price. On 17 July 1976, he received a shot at the WBA welterweight title against champion Ángel Espada. Cuevas pulled off an upset victory by knocking Espada to the canvas three times in the second round. At age 18, he was the youngest welterweight champion in history. In his first defense, he traveled to Japan and defeated hometown fighter Shoji Tsujimoto by knockout. One of the greatest wins of his career was against Argentinian Miguel Angel Campanino, who boasted an impressive record (84-4-4), including a thirty-two fight winning streak. Once again, Pipino disposed of his challenger before the end of the second round. On 8 June 1977, he faced veteran Clyde Gray of Canada who had only been stopped twice in his entire career which included fifty-eight wins. Yet again, Cuevas pulled off another second round knock out. A few months later, Cuevas returned to the ring for a rematch against Espada. This time Cuevas defeated Espada in the eleventh round after he sustained a broken jaw. On 4 March 1978, he disposed of Harold Weston in the ninth round after Weston also sustained a broken jaw like Cuevas' previous challenger. Cuevas then defeated former champion Billy Backus in one round. On 9 September 1978, he defeated hometown favorite Pete Ranzany (40-2-1) in Sacramento, California via a second-round knockout. He defeated Scott Clark (28-1-0) in another second-round knockout. Cuevas next title defense went the distance in a unanimous decision win against the durable Randy Shields (33-5-1). On 8 December 1979, he faced Espada for a third time, stopping him in the tenth round. Cuevas then defeated South African national champion Harold Volbrecht by fifth-round knockout. Cuevas finally lost his title in 1980 to the undefeated and up-and-coming hometown hero Thomas Hearns in Detroit. The much taller and lankier Hearns was able to use his reach to his advantage as he kept Cuevas at a distance and knocked him out in the second