The Caribbean Series is the longest-running international club baseball tournament in the Americas, but its participants have generally been limited to members of the Caribbean Professional Baseball Confederation (CPBC), an organization which includes the domestic winter leagues of Venezuela, Puerto Rico, Mexico, and the Dominican Republic.

[1][2] The CPBC responded by provisionally expanding the Caribbean Series by inviting the league champions from Colombia, Panama, Nicaragua and Curaçao.

However, in 2024, the CPBC announced that the 2025 Caribbean Series would drop the new participants, and return to the four full members only (plus a Japanese representative).

On September 20, 2024, representatives of the baseball federations of Argentina, Colombia, Cuba, Curaçao, Panama and Nicaragua announced the formation of the Baseball Association of the Americas (Spanish: Asociación de Béisbol de las Américas, or ABAM).

[5] Additionally, it was reported in 2024 that the baseball federations of Aruba and Honduras have shown interest in participating in the tournament.