Lazaro Sosa Barrera was a Cuban-born American Hall of Fame thoroughbred racehorse trainer.
Born in Havana, "Laz" Barrera was one of nine brothers who went on to become involved in thoroughbred horse racing in the United States. While in his teens, he began working at a racetrack in his native Cuba and within a few years was one of the country's most respected young trainers.
Seeking increased opportunities in a larger market, in the 1940s Barrera moved to Mexico to race horses at the Hipodromo de las Americas in Mexico City. There, he met California-based trainer Hal King, who encouraged him to come to the United States. Barrera did, and in 1971 trained his first American Stakes race winner. In the ensuing years he built a solid reputation and in late 1975 was given Bold Forbes to train who had been that year's Puerto Rican two-year-old thoroughbred sprint champion. Racing in the U.S. in 1976 under jockey Angel Cordero, Jr., Bold Forbes won several important races for Barrera including the Wood Memorial Stakes in record time. He went on to win the most prestigious race of all, the Kentucky Derby, finished third in the Preakness Stakes and, for a converted sprinter, pulled off a dramatic win in the 1Â½ mile long Belmont Stakes.