How to go to a baseball game in Cuba:
The baseball season begins in late August with occasional breaks for the Cuban National team’s international tournaments and culminates with the league’s playoffs beginning in early March
How can I find more information about the games in early March? When and where do they play? For example, near Havana, Trinidad, Santa Clara.
It seems this year the season ended earlier than usual, the finals already took place end of January.
Se here:http://www.beisbolencuba.com/series/serie-nacional-beisbol-2016-2017/final
And here:http://www.sportstats.com/baseball/cuba/serie-nacional/
On top of that, many Cuban players are currently busy with the World Baseball Classic. I would not expect any serious game to take place in Cuba during this period.
Update: The Classic just finished for the Cuban team, they lost miserably...
In case you go to Havana while there is an active baseball season, the place to go to watch a game would be "Estadio Latinoamericano", and in Santa Clara it would be the "Estadio Augusto César Sandino".
There is at least one stadium like those at each province capital.
The season is over in March 2017. I have watched a game in Trinidad on Saturday morning among some local teams. Entry was free.