Each team plays a fifty-game round-robin schedule that begins at the middle of October and runs to the end of December. The top four teams engage in another round-robin schedule with 18 games per team from the end of December to the end of January; the top two teams in those standings then play a best-of-nine series for the national title. The league's champion advances to the Caribbean Series to play against the representatives from Mexico, Venezuela, Cuba and Puerto Rico.