Oliver Stanley Livingstone Cayasso Guerrero (September 17, 1906 – August 4, 1986) was a Nicaraguan baseball player active from the 1930s to the 1950s. Along with Dennis Martínez, he is commonly cited as one of the best Nicaraguan baseball players of all time.[1]
Born in Bluefields in eastern Nicaragua, Cayasso's "Navy" team played a barnstorming tour of the country's Pacific coast in the early 1930s, which is cited as the catalyst for baseball's popularity in the country.[2] Cayasso played the 1933 season for Managua, and later joined the "General Somoza" club, named after the country's dictator Anastasio Somoza García.[3] In 1941, he joined the Cinco Estrellas club; technically part of the Nicaraguan National Guard, Cayasso's on-field performance saw him promoted to the rank of lieutenant.[3]
Cayasso was inducted into the Nicaraguan Sports Hall of Fame on August 2, 1994.[4] The former national stadium of Nicaragua, built in 1948, was renamed the Estadio Stanley Cayasso in 2018, after the construction of the nearby Estadio Nacional Dennis Martínez.[5]Connie Marrero, who faced Cayasso in the Amateur World Series, commented that "I am sure that Cayasso would have been a bright light in whatever league. He is the best Nicaraguan player that I have seen."[3]