This video says about itself:
Baseball Fiesta in Barcelona 1992 – Summer Olympics
Cubans play baseball just as Brazilians play soccer – it’s their national sport. Pick any street in Havana and you are as likely to see impromptu games taking place as you are to see locals walking to the shops.
The sport was introduced to the island by American sailors back in the 1860s. Banned during the first Cuban War of Independence from Spanish rule in 1869 because Cubans began to prefer it to bullfighting, the baseball ban only increased interest in the sport.
Baseball became a symbol of Cuban freedom and independence and even former President Fidel Castro was known to pitch a few balls from the mound in his day.
Cuban baseball players are among the best in the world. The national team became Olympic champions three times. So, the biggest baseball competition in the world, Major League Baseball in the USA, wants Cuban players. However, for a long time, Cuban-United States relations were very bad. That meant Cuban players could only travel to the US, eg, via Mexican criminal gangs extorting them.
Under the Obama administration, there was some improvement in US-Cuban relations. However, Donald Trump has ruined much of that improvement. In spite of that, the baseball federations of both countries did not give up, and have an agreement now.
From the Washington Post in the USA:
MLB, Cuban Baseball Federation reach agreement; Trump administration signals it has issues with deal
19 December 2018
Major League Baseball on Wednesday reached a historic agreement with Cuba’s baseball federation, modeled after those with leagues in Japan and Korea, that would regulate and streamline the entry of Cuban players coming to the U.S., the league announced. But it remains to be seen whether the Trump administration’s harder line against the Cuban government leaves room for the agreement to work in practice.
The agreement, the result of years of negotiations between MLB, the MLB Players Association and the Cuban Baseball Federation (FCB), is designed to end decades of fraught relations between MLB and Cuba and eliminate the need for Cuban players to defect. …
However, a State Department spokesman said that players will have to travel to a third country to apply for a visa, like other Cuban nationals, per current U.S. policy.