In 1961, the post-revolutionary government outlawed professional sports, including the Cuban League, a small professional baseball league. The Cuban baseball league system was formed, with the Cuban National Series as its top level of competition.
"Cronología: 1962" (in Spanish). Archived from the original on February 25, 2005. Retrieved October 2, 2006. (Note - text is printed in a white font on a white background, depending on browser used.)